Baby Sleep Schedule by Age: A Month-by-Month Guide (0–12 Months)
"There is no one baby sleep schedule. There is a shape: how much sleep, how many naps, how long the night stretch gets, month by month. Here it is, in one printable table."
It’s 2 a.m. The baby is awake. You’ve done the feed, the change, the rock, and the second feed. Now you’re on your back with the phone at half brightness, searching “baby sleep schedule by age,” hoping the answer is a number you’re missing.
Here’s the number: there isn’t one.
Not because nobody measured it. Because a baby sleep schedule by age is a shape, not a timetable. Healthy babies sleep a wide range of hours, take different numbers of naps, and reach the same milestones on different days. The AAP says so itself: sleep needs vary, and every child is different.1 Any article that hands you one bedtime for every four-month-old is selling something.
What you can hold onto is the shape. Month by month, the total sleep, the naps, and the longest night stretch move in predictable directions. This guide maps that shape from newborn to twelve months in one table you can print, with the why behind each change. Use it as a map, not a report card.
The newborn sleep schedule: why there’s no schedule yet
For the first six weeks, “schedule” is the wrong word. A newborn’s sleep is driven by two things that have nothing to do with a clock: hunger and an immature sleep system.
The internal clock is not built yet. The circadian rhythm, the daily cycle that makes adults sleepy at night and alert in the morning, starts organizing only between 6 and 12 weeks.2 Until then, a baby does not know night from day, because in the womb there was no day to learn. That is the day-night confusion: three hours asleep at 3 p.m., wide awake at 3 a.m., and none of it your fault.
The sleep itself runs on short cycles of roughly 40 to 50 minutes, and about half of a newborn’s sleep is the light, active kind: the grunts, twitches, and fluttering eyes that have you checking the breathing for the tenth time.3 Babies wake at the end of a cycle. That is not a mistake. That is the design.
So what does normal look like? Newborns typically sleep 14 to 17 hours in 24, in bursts of 2 to 3 hours around the clock, waking to feed because a stomach that size empties fast.4 Naps range from 20 minutes to 2 hours. Formal sleep standards do not begin until 4 months, precisely because the range under that is so wide.5 If your baby’s numbers live anywhere near that territory, you are in normal.
(One thing to get right from day one, so neither of you has to think about it at 2 a.m.: safe sleep. Back on a firm flat surface, nothing loose in the crib. The AAP’s safe sleep guidance is a ten-minute read that covers the rest.)
Baby sleep schedule by age: the month-by-month table
Here is the whole first year in one table. The totals are the numbers with evidence behind them: the AAP endorses 12 to 16 hours per 24 for babies aged 4 to 12 months.1 The nap counts, nap lengths, night stretches, and wake windows below are the typical pattern from pediatric sleep practice, not formal standards. Typical means most babies, not your baby.
| Age | Total sleep in 24h | Naps per day | Typical nap length | Longest night stretch | Typical wake window |
|---|---|---|---|---|---|
| 0–6 weeks | 14–17 h | 4–5 | 20 min–2 h | 2–4 h | 45–60 min |
| 6 weeks–3 months | 14–16 h | 3–5 | 30 min–2 h | 4–6 h | 60–90 min |
| 3–4 months | 14–15 h | 3–4 | 30 min–2 h | 5–8 h | 90 min–2 h |
| 4–6 months | 12–15 h | 2–3 | 30 min–2 h | 6–10 h | 90 min–2 h |
| 6–9 months | 12–15 h | 2–3 | 45 min–2 h | 8–11 h | 2–3 h |
| 9–12 months | 12–14 h | 2 | 1–2 h | 9–12 h | 3–4 h |
Read the totals as a falling band, not a falling line. Print the table, keep it on the fridge, and check your week against the band rather than against the numbers.
Here is how to use it. Say your baby is five months old. The row says 12 to 15 hours total, two or three naps, a night stretch of 6 to 10 hours. If she lands at 13.5 hours with three naps and one 7-hour stretch, she sits in the middle of the band. If she lands at 11 hours with four catnaps, she sits at the edge. Neither number alone is a problem. The band is wide for a reason.
Wake windows deserve their own note. The column above is a rough guide from observation, not a medical standard: newborns handle roughly 45 to 60 awake minutes before a nap, and the window stretches toward three to four hours by a year. Treat it as a starting point for “is she tired?” rather than a schedule to enforce.
Reading the table without spiraling
Three rules keep a reference table from becoming a source of anxiety.
The useful comparison is to yourself, not to strangers. The question is not “is she like the table?” It is “is she like she was last month?” A baby who drops from 14 hours to 12 while staying bright, feeding well, and gaining weight is probably fine. A baby who suddenly loses two hours of sleep is a different conversation.
Watch the trend, not the day. One bad night is a bad night. Pediatric sleep guidance is about what happens over weeks. A single short nap tells you nothing; a pattern of short naps tells you the baby is learning something, usually how to connect sleep cycles.
Ranges are ranges. The wide band is not sloppy. It is the honest answer. The AAP’s own recommendation spans four hours because four hours of variation is normal, healthy variation.1
Why sleep changes when it does
Across the first year, the baby sleep totals by age stay inside one band while everything about the shape changes. Three changes do most of the work, and knowing them makes the bumps easier to read.
The first is the clock. Between 6 and 12 weeks the circadian rhythm starts to organize, and sleep begins to gather at night.2 The 3 a.m. parties taper off, not because you fixed anything, but because the brain built the machinery.
The second is the cycles. Newborn sleep cycles run about 40 to 50 minutes; by later infancy they lengthen toward an hour or more, and babies start to link several cycles into one stretch.3 The nap schedule by age follows the same arc: four or five short naps early, two longer ones by the first birthday. That is why the longest night stretch column climbs from 2 to 4 hours toward 9 to 12.
The third is what parents call the four-month sleep regression. It is not a regression. It is the opposite: the first permanent upgrade to the architecture of sleep. In the early months, sleep has two states, active and quiet. Around four months, it reorganizes into the adult pattern of deep and light stages on cycles of 45 to 60 minutes.6 At the end of every cycle, your baby surfaces briefly to check that everything is as it was when they fell asleep. If the conditions changed, they call for you.
That is why two-hour naps suddenly stop at 45 minutes, and why nights fragment. The disruption usually lasts a few weeks; the new architecture is permanent, and it is healthy. It is one of those milestones that reads like bad news in the moment and good news in retrospect.
When a change deserves a phone call
Most sleep changes are development doing its job. A few are worth a quick word with your pediatrician, and you do not need to apologize for calling:
- a sudden, unexplained change in sleep, like a baby who slept well and now wakes constantly for no obvious reason;
- sleepiness that does not lift, especially with poor feeding, low output, or signs of illness;
- anything about breathing during sleep that worries you, including pauses.
Frame it the way you would to a friend: probably nothing, but you want to check. That is exactly what the call is for.4
Baby sleep questions parents actually ask
My baby sleeps less than the table says. Is something wrong? Probably not. The range is wide, and some healthy babies run below it. What matters is the trend: feeding, weight gain, and how alert the baby is during wake time. If those are steady, a low total is usually just your baby’s number. If sleep keeps dropping week over week, mention it.
My baby sleeps more than the table says. Same answer, flipped. A baby who is hard to wake, hard to feed, or gaining slowly is worth a call. A baby who sleeps long stretches and feeds well is a blessing, not a problem.
When will my baby sleep through the night? Define the term first. “Sleeping through the night” usually means a single stretch of 6 to 8 hours, and most babies reach it between 3 and 6 months. Some healthy babies take longer, waking once or twice to feed well into the second half of the year. Both are normal.7
Should I wake a sleeping baby to feed? In the first weeks, often yes: until a newborn has regained birth weight, pediatricians usually want feeds every few hours, which means waking a sleeping baby who has gone long. After that, the guidance flips, and your pediatrician’s weight-gain advice is the tiebreaker.
Day and night are swapped. What actually helps? The cues, not the clock. Bright days with normal household noise, dark quiet nights with feeds done in dim light, and a consistent morning anchor so the day starts at the same time each morning. The NHS describes the same routine in plain terms.8 It takes weeks, not days.
Track sleep to see the pattern
Every guide in this post points at the same thing: the trend over weeks is the signal, and the only way to see a trend is to write it down. Same crib, same rough times, every sleep logged in seconds.
That is what Storklet’s feeding and sleep tracker is for. Sleep sits on the same timeline as feeds, so the pattern shows itself instead of living in your memory: when the last nap ended, how the night stretch is changing, what a growth spurt did to the schedule. Everyone who cares for the baby sees the same record. It works offline, and the data stays private on EU-hosted servers.
The table on your fridge tells you what normal looks like. The tracker tells you what normal looks like for your baby. That is the version that matters.
Sources and Further Reading
We base our explainers on high-quality academic research and public health standards.
- The AAP endorses the sleep duration recommendations of the American Academy of Sleep Medicine: 12 to 16 hours per 24 hours, including naps, for babies aged 4 to 12 months, with the explicit caveat that every child is different and sleep needs vary. No formal standard exists below 4 months because the range is so wide.↩
- The circadian rhythm, driven by the brain’s suprachiasmatic nucleus, starts organizing between 6 and 12 weeks as the baby’s melatonin responds to light and dark cues. Before that, sleep is distributed evenly across the 24 hours.↩
- Newborns spend about half their sleep in active, REM-like sleep, against roughly a quarter in adults, and a newborn sleep cycle runs 40 to 50 minutes. Adult cycles run about 90.↩
- Most newborns sleep 2 to 3 hours at a stretch and wake to feed around the clock; by 3 months, a 6 to 8 hour stretch is common. CHOP’s guidance also flags the rare patterns worth a pediatrician call, including very sleepy babies with poor feeding and sudden unexplained changes in sleep.↩
- The AASM’s age bands begin at 4 months precisely because infant sleep below that age is too variable for a standard. Newborns typically sleep 14 to 17 hours, but “typical” spans a wide range.↩
- At around 4 months, sleep reorganizes from two states into the adult pattern of distinct deep and light stages on 45 to 60 minute cycles. The disruption that follows is temporary; the architecture is permanent.↩
- “Sleeping through the night” has no universal definition. CHOP counts a 6 to 8 hour stretch without waking, and most babies reach it from about 3 months. You will hear other numbers, including 5 hours, because the definition varies from one source to the next.↩
- The NHS describes the same day-night cues: bright, noisy days; dark, quiet, low-stimulation nights; and a consistent start to the day.↩
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