3–5 month old sleep schedule: naps, wake windows and example days

From 4 months, the American Academy of Sleep Medicine recommends 12–16 hours of sleep in 24 hours, including naps. At around 4 months, Sleep Foundation describes three to four daytime naps and around 10–12 hours of night-time sleep as typical, with one to three night wakings for a feed or comfort still normal. Commonly used wake windows sit at about 1.25–2.5 hours at 3–4 months. This is also when sleep changes shape, so a pattern that worked at 12 weeks may wobble by 16.

How much sleep does a 3–5 month old need?

The AASM made no recommendation for babies under 4 months because the evidence was too limited. KidsHealth gives 14–17 hours as typical up to 3 months, and the Children's Hospital of Philadelphia gives an average of 15 hours at 3 months, about 9–10 at night and 4–5 in the day. These are averages, not targets.

Cleveland Clinic's tired-signs guide says that by 4 months babies usually sleep 10–12 hours at night, often waking once or twice to eat, and nap for 3–5 hours a day. Sleep Foundation's figure of one to three night wakings is slightly wider; both describe night waking as normal.

What are typical wake windows at 3–5 months?

The Cleveland Clinic ranges and Sleep Foundation ranges differ, and neither cites research, so treat them as a practical convention rather than clinical guidance. The window includes feeds, nappy changes and play. Use the lower end as your cue to start watching for tiredness: staring, yawning, eye rubbing, jerky movements, clenched fists or turning away from you. See wake windows by age.

What does a 3–5 month old's day look like?

These two days are examples built from the ranges above, not targets. Feed on cue in between if your baby is hungry; the times are only there to show the rhythm.

Example day — adjust to your baby: four naps (around 4 months)

Wake windows here run about 1 hour 30 minutes to 2 hours, and daytime sleep adds up to about 3 hours 45 minutes.

Example day — adjust to your baby: three naps (around 5 months)

Wake windows here run about 2 hours to 2 hours 30 minutes, with about 3 hours 15 minutes of daytime sleep.

What changes in a baby's sleep around 4 months?

Sleep Foundation explains that around this age, brain development moves babies from newborn sleep patterns to more mature sleep stages. The upside is longer stretches over time. The downside, for a while, can be more frequent night wakings, shorter naps, trouble falling asleep and extra fussiness. Sleep Foundation says these problems usually last a few days to a few weeks.

What tends to help:

1. Keep days bright and nights dull. The NHS suggests daylight and play by day, and low light, a quiet voice and little play at night.
2. Start or keep a short bedtime routine. KidsHealth on 4–7 month olds suggests something like a warm bath followed by stories or singing.
3. Try putting your baby down drowsy but awake, as KidsHealth suggests, if it suits your baby. If it doesn't work yet, that's fine; try again in a few weeks.
4. Watch tired cues closely, because overtired babies tend to settle less easily during this phase.

See the 4-month sleep regression for more.

Why are naps so short at this age?

Shorter naps are one of the common signs Sleep Foundation lists for the 4-month changes, and many babies this age take some short naps anyway. Things many families find help: a darker room, a consistent pre-nap wind-down, and watching for cues so your baby isn't overtired when you put them down. After a short nap, start watching for tired cues sooner. See short naps and overtired baby.

When do babies drop from four naps to three?

There's no fixed age, but as wake windows lengthen towards the 2–4 hours Cleveland Clinic gives from 5 months, a fourth nap often stops fitting in before bedtime. Signs your baby may be ready:

• the last catnap is refused, or pushes bedtime late
• the earlier naps are getting longer
• your baby is content for longer between sleeps

Make the change gradually: stretch each window a little, let the last nap go, and bring bedtime slightly earlier for a while if your baby is tired. Some days will still need four naps, especially after a run of short ones. KidsHealth describes 2–3 naps for babies aged 4–12 months; see the 6–8 month sleep schedule.

Are night feeds still normal at 3–5 months?

Yes. Sleep Foundation says it's normal for a 4-month-old to wake one to three times a night for feeding or comfort. The NHS says some babies aged 3–6 months sleep 5–8 hours or longer at night, but not all. KidsHealth on 1–3 month olds notes that at this stage "sleeping through the night" usually means a stretch of 5 or 6 hours, not 12.

KidsHealth also describes some families shifting the late feed earlier, for example waking the baby to feed at about 11 pm, so the longest stretch lines up with the parents' sleep. See dream feed for how that works and when it doesn't. Feed responsively; a schedule should never mean holding off a hungry baby. See night wakings and sleeping through the night.

Sleep Foundation's overview of baby sleep says babies typically become able to follow a day and night sleep schedule between 4 and 6 months, so expect the pattern to keep settling rather than arrive all at once.

How do you keep sleep safe as your baby starts to roll?

The AAP's safe sleep guidance says to stop swaddling as soon as your baby looks like they're trying to roll over. Australia's Red Nose in Australia also says to stop wrapping by 3 months of age, whichever comes first. Australia's Red Nose describes a safe sleeping bag as well fitted across the neck and chest, with arms out and no hood. KidsHealth says that once babies consistently roll from front to back and back to front, it's fine for them to stay in the position they choose, but always put them down on their back.

Australia's Red Nose's six safe sleep recommendations also cover keeping the head and face uncovered, a smoke-free environment, a safe sleeping environment night and day, and your baby's own sleep space in your room for at least the first 6 months. The AAP adds a firm, flat surface, nothing soft or loose in the cot, and no weighted or inclined sleep products. See safe sleep and swaddling.

When should you get help with your baby's sleep?

• Call 999 now if your baby is struggling to breathe, has blue, grey, pale or blotchy skin, lips or tongue, is floppy, difficult to wake or cannot be woken, is much sleepier than usual and not feeding, or is having a seizure. These are on the NHS list of signs needing urgent help, which also includes a temperature of 38°C (100.4°F) or higher in a baby under 3 months.
• See a doctor today (or call NHS 111) if your baby is feeding much less than usual, has fewer wet nappies than usual, or seems unwell.
• Book a GP or health visitor visit soon, rather than waiting for the next check, if your baby snores most nights or snorts or gasps in their sleep. The AAP sleep apnoea guide says to tell your doctor right away about frequent snoring.
• Mention it at the next check with your GP or health visitor if sleep changes come with fewer feeds or slow weight gain, as Sleep Foundation advises.

If you are so exhausted or low that you have thoughts of harming yourself or your baby, call Samaritans on 116 123 or 999 now.

What's worth noting in a sleep log?

Note when each sleep starts and ends, how long your baby was awake before it, and night feeds. Over a week you'll see whether a fourth nap is still fitting, and whether short naps follow longer windows. It also gives your GP or health visitor a clear picture if you're worried.