In the newborn stage, bedtime is often quite late.
A baby may nap on and off through the evening, feed again around 9 or 10 PM, and then settle into their longest stretch of sleep. Families get used to that pattern quickly because, for a while, it is simply what the baby is doing.
The part that is easy to miss is that it changes.
A few months later, the baby may be ready to start the night much earlier, while everyone is still working toward the same 9:30 or 10 PM bedtime that made sense in the newborn weeks. Sometimes the first sign is simply that evenings have become harder. The baby gets very fussy, keeps falling asleep during the last feed, or seems completely exhausted well before bedtime.
That may be less about a new sleep problem and more about the fact that bedtime needs to move.
Newborn bedtime and baby bedtime are not the same thing
In the first weeks, sleep is still spread throughout the day and night. Feeding drives much of the rhythm, and the longest stretch of sleep may begin late in the evening.
Over the first few months, sleep becomes more organized around day and night, and many babies naturally begin starting their night earlier.
That is why a bedtime that worked well at six weeks may feel completely wrong a couple of months later.
There is no exact age when this has to happen, and there is no universal bedtime. But this is usually the stage when parents start noticing that 9 or 10 PM no longer works as well as it used to.
How do you know bedtime may need to move earlier?
Look at what is happening at the end of the day.
If your baby is consistently struggling to make it to the bedtime you are aiming for, that is useful information. Maybe the last nap has become difficult to fit in. Maybe your baby is clearly tired much earlier than before. Maybe bedtime itself has become much harder even though nothing else has changed.
The timing of the last nap matters too. A baby whose last nap ends earlier may simply be ready for nighttime sleep earlier.
Wake windows can help as a rough guide, but I would not use them like a formula. The same baby may need a slightly different bedtime from one day to the next depending on how naps went and how tired they are by evening.
Does every baby need a 7 PM bedtime?
No.
Seven o’clock is not a magic bedtime.
For many older babies and toddlers, bedtime naturally falls somewhere around 7 or 8 PM. That also fits with what we know about early childhood circadian rhythms, which tend to run earlier than adult rhythms. But there is still no single biologically correct bedtime for every child.
Some babies do very well around 7 or 7:30. Others are more comfortable closer to 8. What matters is whether the timing fits the baby and the rest of the day.
If your baby is falling apart by 6:45, keeping them awake until 8:30 because that used to be bedtime probably is not helping. But if they are still happy and alert at 7, there is no reason to force an earlier bedtime just because that is what another baby is doing.
Will an earlier bedtime cause an earlier morning?
Parents worry about this a lot, and it makes sense.
If bedtime moves earlier, it can seem logical that morning will move earlier too.
But infant sleep does not work like a fixed block of hours. In some babies, an earlier bedtime simply gives them more nighttime sleep without shifting morning dramatically earlier.
So if your baby is clearly ready for the night at 7:30, keeping them awake until 9:30 does not necessarily buy you a later morning.
Sometimes it just creates a harder evening.
Bedtime keeps changing
This is another reason not to get too attached to one exact bedtime.
As naps change and babies become comfortable staying awake longer, bedtime changes too. When a nap drops, bedtime may move earlier for a while. Later, it may shift again.
That is normal.
The goal is not to find the one correct bedtime and keep it forever. It is to notice when the bedtime you have been using no longer fits the baby you have now.
Quoting these notes
You’re welcome to quote these observations in an article, newsletter, or post. That’s what they’re here for.
I only ask for credit: please name me, Margo Yudanova, and link back to the original page at margonova.com/blog/ideal-bedtime-for-baby.
If you’re writing something and want a comment, clarification, or a detail I haven’t covered here, write to me at info@margonova.com.
Want personalized help with your baby's sleep? Start with a sleep consultation. If your baby is four months or older and you'd rather have me in the room for the first nights, see in-home sleep training in San Francisco.
