3 Month Old Baby Sleep Schedule
Three month olds sleep around 14 to 16 hours a day, split across three or four naps and a long overnight stretch with one or two feeds. Most days run on wake windows of 75 to 105 minutes, with bedtime landing between 6:30pm and 7:30pm. If that sounds neat, the reality can be a lot messier. The point of a schedule at this age is not the clock; it is the pattern and routine your baby can settle into and expect as they grow.
This is the age where it starts to click. You can almost predict the day. The fourth nap fades. Bedtime moves earlier. And then, often right when you have finally got the hang of it, the early signs of the 4 month regression start whispering at the door. We will get to that. First, the schedule.
What a 3 month sleep schedule looks like
The schedule below assumes a 7am wake. If your baby starts the day at 6:30am or 8am, shift everything by the same amount. The wake windows stay the same; the clock around them moves.
| Time | Notes |
|---|---|
| 7:00am | Wake and feed. |
| 8:30am | Nap one (1 to 1.5 hours). |
| 10:00am | Wake and feed. |
| 11:30am | Nap two (1 to 2 hours, often the longest of the day). |
| 1:30pm | Wake and feed. |
| 3:00pm | Nap three (45 to 60 minutes). |
| 4:00pm | Wake. Pram walk, floor play. |
| 5:30pm | Optional fourth nap (20 to 30 minutes, only if needed). |
| 6:30pm | Bath, feed, dim the room. |
| 7:00pm | Bedtime. |
| Overnight | One feed for most babies, around 2am to 4am. |
Wake windows at 3 months
Wake windows lengthen at 3 months. Most babies do well on 75 to 105 minutes between sleeps, with the first wake window being the shortest and the wake window before bedtime being the longest. Too short and the nap is short. Too long and your baby is overtired before they even reach the cot.
Sleepy cues at this age get subtler. The yawning and eye-rubbing become less reliable. Watch for the slowing down: less engaged, quieter, looking away from stimulation. That is the window.
What is “normal” at 3 months
Three or four naps a day, with the third often being a quick refresh.
One or two overnight feeds. Some babies stretch to a single feed around 2am.
Short naps. The 45 minute nap is common at this age. Frustrating, normal.
A bedtime between 6:30pm and 7:30pm. Earlier is fine.
The occasional brilliant week followed by a wobbly one. That is the texture of 3 months.
When the schedule stops working
If your 3 month old suddenly starts waking more, fighting naps, or refusing bedtime, look first at the wake windows. They grow quietly. A window that fit two weeks ago can now be 15 minutes too short. Lengthen the windows by 15 minutes for three days and see what happens.
If wakes ramp up overnight around 14 to 16 weeks, that is the 4 month regression announcing itself. It is not your baby unlearning sleep. It is the sleep architecture changing. Hold routines, lean on what you know, and ride it out.
Your specific 3 month schedule, built around your baby
The schedule above is a template. Your version is built around your baby's actual wake time, feed cues, and how the day usually breaks. That is the Sleep Schedule Helper. Tell it your baby's age and wake time, and it adapts the schedule in real-time. Ask follow-up questions when something is not working. Two questions a month are free.
Get Your Personalised 3 Month Schedule Now
Tell the Helper your baby's wake time and it builds your schedule for the rest of the day. If you have a specific bedtime you’re aiming for, add this for a personalised schedule for the day. Two free questions a month or $5.99 USD a month for unlimited. Cancel any time.
Frequently Asked Questions
How long should a 3 month old nap?
Most 3 month naps run between 45 minutes and 2 hours. The middle nap of the day tends to be the longest. Short naps (under 45 minutes) are normal at this age and usually mean a wake window that was too short or too long. Adjust by 15 minutes and try again.
Why does my 3 month old wake every 40 minutes?
That is one sleep cycle. Babies wake fully or briefly between cycles. At 3 months they are still learning to connect them. If your baby cannot resettle on their own, the wake becomes a full nap end. Give it two to five minutes before going in to see if they settle.
What time should a 3 month old go to bed?
Between 6:30pm and 7:30pm for most babies. If your baby is on three naps, 7:00pm tends to be the sweet spot. If they are still doing a late catnap, bedtime drifts to 7:30pm. Earlier than 6:30pm is fine on a rough sleep day.
Is my 3 month old ready for sleep training?
Most sleep specialists wait until at least 4 months before formal training, because the sleep architecture is still changing. At 3 months you can absolutely work on the foundations: consistent routine, age-appropriate wake windows, sleep-time cues (swaddle or sleep suit, noise machine, dim room), putting your baby down drowsy but awake.
When does the 4 month regression start?
Most babies move into it between 14 and 18 weeks. The earliest signs are more frequent overnight wakes and shorter naps. It is a permanent change in how your baby sleeps, not a phase. The regression itself passes in 2 to 6 weeks; the new sleep pattern stays.