Baby Sleep Schedule by Age

Few things preoccupy new parents like sleep — specifically, the hope that there is a "schedule" out there that will finally make nights predictable. The honest truth is gentler and more useful than a fixed timetable: a baby's sleep changes steadily through the first year, and the most practical way to work with it is to follow wake windows and your baby's tired cues, rather than the clock.

Here is how sleep tends to evolve across the first year, and how to use wake windows at each point.

How much sleep, by age

It helps to start with the totals. The American Academy of Sleep Medicine, whose guidance the American Academy of Pediatrics endorses, recommends that infants 4 to 12 months sleep 12 to 16 hours per 24 hours, including naps, and that children 1 to 2 years sleep 11 to 14 hours. Newborns under four months are not given a formal figure because their sleep varies so widely, but they typically sleep around 16 to 18 hours spread across many short stretches.

Treat these as general targets, not tests — healthy babies vary, and your own baby's needs may sit a little above or below the range.

What a "wake window" is

A wake window is simply the length of time a baby can comfortably stay awake between sleeps before becoming overtired. It is not an official medical term, but it is a genuinely useful lens, because wake windows lengthen predictably as a baby grows. The skill is learning to read your baby's tired cues — yawning, rubbing eyes, staring off, getting fussy — and offering sleep before they tip into overtiredness. The figures below are broad guides; every baby is different.

0–3 months: no schedule, just rhythm

Newborns do not follow a schedule, and trying to impose one rarely helps. They sleep in short cycles around the clock, often with day-and-night confusion in the early weeks. Wake windows are very short — frequently under an hour. The best approach is to follow feeding and sleepy cues, and simply keep the sleep environment safe. What your baby wears matters here too; our guide to what your baby should wear at night covers it.

3–6 months: rhythms begin to appear

Somewhere in this window, a looser rhythm often emerges. Naps start to consolidate — many babies settle toward three or so daytime naps — and night stretches lengthen. Wake windows typically stretch to somewhere around one-and-a-half to two-and-a-half hours. A gentle, consistent wind-down before sleep begins to help now.

6–9 months: more predictable

By this window many babies move toward two or three naps and a more settled pattern, with wake windows often around two to three hours. This is also when sitting, more active play and the start of solids can all nudge sleep around a little — our guides to when babies start sitting and starting solids both touch this age.

9–12 months: longer days awake

Toward the end of the first year, many babies are on around two naps with longer stretches of night sleep, and wake windows often extend to roughly three to four hours. A predictable daily rhythm and a familiar bedtime routine tend to make the biggest difference at this age.

Safe sleep, at every age

Whatever the schedule, the safe-sleep basics stay constant through the whole first year: babies sleep on their back, on a firm, flat surface, with nothing loose in the sleep space. A comfortable room temperature and breathable sleepwear matter more than any timetable — we cover this in what your baby should wear at night. To plan naps and bedtime around your baby's current age, our free sleep and wake windows guide does the math for you.

Follow the baby, not the clock

The reassuring thing about baby sleep is that it does settle, gradually, on its own timeline. Wake windows and tired cues will serve you far better than a rigid schedule, and the pattern that suits your baby now will shift again as they grow — which is exactly why we think in terms of meeting a baby where they are, the idea behind choosing what a baby needs by milestone, not size.

This guide is general information, not medical advice. Sleep needs vary between babies — if you have concerns about your baby's sleep or breathing, speak with your pediatrician.