3, 4 and 5 month old sleep schedule: wake windows, naps and bedtime
3, 4, and 5 month old sleep schedules with exact wake windows (1.5 to 2.5 hours), the 4-to-3 nap transition, 30-minute nap fixes, and worked 7am timetables.
Quick answer: Between 3 and 5 months of age, babies need 12 to 16 hours of total sleep per 24 hours—typically 10.5 to 11.5 hours overnight (with 1–2 feeds) and 3 to 4 hours of daytime sleep split across 4 naps at 3 months and 3 naps by 4.5 to 5 months. Wake windows expand from 75–110 minutes at 3 months to 90–120 minutes at 4 months and 2–2.5 hours at 5 months.
90–120
Minutes awake at 4 months
Shortest in the morning (75–90m), reaching a full 2 hours before bedtime.
4 → 3
Naps per day across 3–5 months
Most babies drop the 4th late-afternoon catnap between 15 and 19 weeks.
3–4
Hours of total daytime nap sleep
More than 4 hours by day at 4–5 months often steals sleep from the night.
12–16
Hours total sleep in 24 h (AASM)
Consensus range for infants 4 to 12 months of age.
A 3 to 5 month old sleep schedule marks the bridge between unpredictable newborn catnaps and a true circadian rhythm anchored around a 7:00 am wake-up and a 7:00 pm–7:45 pm bedtime. Across these twelve weeks, your baby reorganises sleep cycles, drops from 4 naps down to 3 naps, and stretches awake time from 75 minutes at the start of month three to 2.5 hours by the end of month five.
Because 3, 4, and 5 months share the same 4-to-3 nap transition and single-cycle 30-minute nap hurdle, seeing all three months side by side shows you exactly where your baby is heading next. You can also generate a custom timetable for your own morning wake-up using our wake window calculator.
How do 3-month vs. 4-month vs. 5-month sleep needs compare?
Comparing a 3-month-old schedule versus a 4-month-old schedule versus a 5-month-old schedule shows a steady 15-to-20-minute expansion in every wake window each month, while total daytime nap time gently condenses from 4–4.5 hours down to 3–3.5 hours.
| Metric | 3 Months (12–15 weeks) | 4 Months (16–20 weeks) | 5 Months (21–24 weeks) |
|---|---|---|---|
| Wake windows (morning → bed) | 75m / 90m / 90m / 100m / 110m | 90m / 105m / 110m / 120m | 2 hr / 2.25 hr / 2.25 hr / 2.5 hr |
| Number of naps | 4 naps (occasionally 5 on short-nap days) | 3 to 4 naps (transition month) | 3 naps (2 longer + 1 late-day 30–45m catnap) |
| Target daytime sleep | 3.5–4.5 hours total | 3.25–4 hours total | 2.75–3.5 hours total |
| Target night sleep | 10–11.5 hours (with 1–3 feeds) | 10.5–11.5 hours (with 1–2 feeds) | 10.5–11.5 hours (with 0–2 feeds) |
| Total 24-hour sleep (AASM) | 13–16 hours | 12–16 hours | 12–16 hours |
What does a worked 4-nap schedule (3–4 months) vs. 3-nap schedule (4–5 months) look like?
In practice, whether today is a 4-nap day or a 3-nap day depends on nap length. If Nap 1 and Nap 2 both stop at 35 minutes, you will need a 4th late-afternoon catnap to reach a reasonable bedtime; once Nap 1 or Nap 2 stretches past 60 minutes, 3 naps fit the day cleanly. Check our sample sleep schedules for additional variations.
| Clock time | 3–4 Month 4-Nap Schedule (75–110m windows) | 4–5 Month 3-Nap Schedule (1.75–2.5h windows) |
|---|---|---|
| 07:00 am | Morning wake-up and Feed #1 | Morning wake-up and Feed #1 |
| 08:20 am – 09:20 am | Nap 1 (60 minutes) | 08:45 am – 10:00 am: Nap 1 (75 minutes) |
| 09:20 am – 10:50 am | Feed #2 and floor tummy time | 10:00 am – 12:10 pm: Feed #2 and activity |
| 10:50 am – 12:00 pm | Nap 2 (70 minutes) | 12:10 pm – 01:25 pm: Nap 2 (75 minutes) |
| 12:00 pm – 01:35 pm | Feed #3 and outdoor walk | 01:25 pm – 03:40 pm: Feed #3 and floor play |
| 01:35 pm – 02:35 pm | Nap 3 (60 minutes) | 03:40 pm – 04:20 pm: Nap 3 (40-min catnap, wake by 4:30 pm) |
| 02:35 pm – 04:15 pm | Feed #4 and quiet play | 04:20 pm – 06:50 pm: Feed #4 (5:00 pm), bath, bedtime feed #5 |
| 04:15 pm – 04:50 pm | Nap 4 (35-min bridge catnap in carrier/cot) | 06:50 pm: Into cot awake for bedtime |
| 04:50 pm – 06:45 pm | Feed #5, bath, bedtime feed #6, into cot at 6:45 pm | Overnight: 10.5–11.5 hours night sleep |
How do you transition smoothly from 4 naps to 3 naps?
Dropping the fourth nap is the first real nap transition of infancy, and it typically takes 7 to 10 days of alternating 3-nap and 4-nap days before 3 naps lock in every day. Do not force a 3-nap schedule on a day when your baby woke at 6:00 am and took three 30-minute naps—that leaves them ending Nap 3 at 1:30 pm.
Follow this 5-step process to make the 4-to-3 nap shift without overtiredness:
- Spot the readiness signs for 4 consecutive days. Your baby fights the 4th nap for 20+ minutes, pushes the 4th nap past 5:00 pm, or takes the 4th nap and then refuses to fall asleep until 8:30 pm.
- Add 10–15 minutes to the first three wake windows. Shift from 75 / 90 / 90 / 100 minutes to 90 / 105 / 110 / 120 minutes so the three naps move slightly later in the day.
- Extend Nap 1 or Nap 2 if both are under 40 minutes. If Nap 1 ends at 35 minutes, try a 10-minute contact rescue or stroller nap for Nap 2 so total daytime sleep stays near 3 hours.
- Cap Nap 3 by 4:30 pm–4:45 pm. The third nap is strictly a 30-to-45-minute bridge to bedtime; waking your baby by 4:45 pm protects a full 2-to-2.5-hour final window before a 7:00 pm bedtime.
- Use a 6:30 pm early bedtime on short-nap days. Whenever Nap 3 ends between 3:45 pm and 4:15 pm, skip the 4th nap and bring bedtime forward to 6:15 pm–6:30 pm rather than squeezing in a 5:15 pm catnap.
How do you lengthen 30-minute short naps at 3 to 5 months?
Short 30-to-40-minute naps are the number-one frustration at 3 and 4 months because daytime sleep cycles mature during the 4-month sleep regression before most babies know how to link two cycles together in daylight.
Three practical changes encourage Nap 1 and Nap 2 to lengthen past the 40-minute mark by 5 months:
- Put your baby down awake for Nap 1. If your baby falls asleep at the breast or on your shoulder, waking up alone on a flat mattress after 35 minutes triggers a full startle awake. Practice independent cot settling on the first nap of the morning first.
- Check darkness and wake-window accuracy. Daylight leaking around blinds stimulates cortisol at the 35-minute cycle bridge. Verify your windows against our wake windows by age chart so your baby is neither undertired nor overtired.
- Stop treating every short nap as a crisis. Even at 5 months, only Nap 1 and Nap 2 need to be 60 to 90 minutes; Nap 3 is supposed to be a 30-to-40-minute catnap until it drops entirely around 6.5 to 7.5 months (covered in our 6 to 8 month sleep schedule).
What happens to feeding and rolling between 3 and 5 months?
Two developmental shifts intersect with sleep at this stage: rolling from back to front and the temptation to snack-feed every hour. Once your baby shows any rolling attempt, keep both arms free in a sleep sack (see our swaddle vs. sleep sack guide), and if they roll onto their stomach on their own in a bare, flat cot after learning to roll both ways, the AAP notes you do not need to stand guard flipping them back all night—though you must still place them onto their back at every put-down.
What is the ideal bedtime and night-feeding rhythm at 3 to 5 months?
Between 3 and 5 months, endogenous melatonin rises between 6:30 pm and 7:30 pm, making 7:00 pm to 7:45 pm the most restorative bedtime window for most babies. Most healthy, full-term 3-to-5-month-olds still need 1 to 2 nutritional night feeds (typically a 4–6 hour first stretch followed by a 3-hour second stretch).
For daytime feeding, offer full feeds every 2.5 to 3.5 hours in a quiet, dim corner—4-month-olds are famously distracted eaters who pull off the breast or bottle to look around the room and then wake up every 2 hours overnight to replace the missed daytime ounces. All schedules and recommendations in this guide are educational reference tools and are not medical advice; consult your paediatrician for feeding, growth, or medical questions.
Questions
How long should a 4-month-old stay awake between naps?
A typical 4-month-old stays awake for 90 to 120 minutes (1.5 to 2 hours) between naps. The first window of the morning is usually the shortest at 75 to 90 minutes, midday windows run 90 to 110 minutes, and the final stretch before bedtime runs 105 to 120 minutes.
When do babies drop from 4 naps to 3 naps?
Most babies transition from 4 naps to 3 naps between 3.5 and 4.5 months (15 to 19 weeks). You know your baby is ready when they can comfortably stay awake for 90 to 105 minutes and the fourth nap gets pushed past 5:00 pm, making bedtime later than 8:00 pm.
What is a normal wake window for a 5-month-old?
At 5 months, wake windows expand to 1.75–2 hours before Nap 1, 2–2.25 hours before Naps 2 and 3, and 2.25–2.5 hours before bedtime (often written as 2 / 2.25 / 2.25 / 2.5) on a consistent 3-nap schedule.
Why does my 3- or 4-month-old only nap for 30 to 40 minutes?
A 30-to-42-minute nap equals one daytime infant sleep cycle. Linking two cycles into a 75-to-90-minute nap is a developmental skill that matures gradually between 4.5 and 6 months, beginning with Nap 1 of the morning once the baby falls asleep independently in a dark room.
How many night feeds does a 4- or 5-month-old still need?
Most healthy 3-to-5-month-olds still take 1 to 2 nutritional feeds overnight. If your baby is waking every 60 to 90 minutes all night long, those extra wakings are sleep-cycle transitions from the 4-month progression rather than sudden hourly hunger.
What time should a 3-, 4-, or 5-month-old go to bed?
Between 3 and 5 months, melatonin secretion shifts earlier in the evening, making 7:00 pm to 8:00 pm the sweet spot for bedtime. On days when naps are short and end by 4:15 pm, a 6:30 pm bedtime prevents overtired false starts.
Sources
- Recommended amount of sleep for pediatric populations: a consensus statementAmerican Academy of Sleep Medicine (Paruthi et al., J Clin Sleep Med, 2016)
- Normal sleep patterns in infants and children: a systematic review of observational studiesGalland et al., Sleep Medicine Reviews, 2012
- Bedtime routines for young children: a dose-dependent association with sleep outcomesMindell et al., Sleep, 2015
This guide is educational and does not replace advice from your paediatrician, health visitor or midwife.