Early Morning Waking in a Baby

A five o'clock start is almost always bought during the previous day, and the change everybody tries first — a later bedtime — is the one that usually makes it worse. By five in the morning the drive to sleep is at its weakest, so the smallest thing tips her into the day: too little day sleep, a last stretch that ran too long, a bedtime that has drifted late, light at the window, a real hunger, or a household that treats five o'clock as morning. Work through those six in order, one at a time, and give any change two to three weeks. It usually gets slightly worse before it gets better, which is why most families abandon the thing that was working.

None of the six is a fault. Early rising is a timing problem in a body that has not got much slack left at dawn, and every one of the causes is something you can move by fifteen minutes.

Why the last hour of the night is the fragile one

By the small hours most of the night's sleep has already been taken. What is left is the lightest part of it, and a baby surfacing at that point has very little pressure pushing her back down — so the ordinary end-of-cycle waking that would have passed unnoticed at midnight becomes the start of the day at five.

That is a mechanism rather than a finding: nobody this site may cite has measured it in babies, and it is here because it explains the six causes below rather than because a panel published it. What is published is the ordinariness of the waking itself. The AAP describes a good sleeper at this age as a child who wakes and can get himself back to sleep rather than one who sleeps ten hours undisturbed. A five o'clock waking is not unusual; it is a five o'clock waking she cannot get back down from, and that is the part the day controls.

The six causes, in the order worth testing

Test them in this order, because the earlier ones are commoner and the later ones are easier to mistake for a cause when they are actually a symptom.

1. Too little day sleep. Much the commonest, and it usually follows a nap dropped a few weeks too early. The total for four to twelve months is 12 to 16 hours per 24 with naps counted inside it, and taking an hour and a half out of the day does not add an hour and a half to the night — it leaves her short, and short shows up at dawn.
2. The last wake window ran too long. A baby who arrives at bedtime past the point of settling sleeps heavily at the start of the night and surfaces early. Check the stretch between the final nap and bed against the band for her age with the wake window calculator.
3. Bedtime has drifted late. Fifteen minutes a week, invisible while it happens, and it compounds with the two above.
4. Light and noise. Cheap to test, so test it early. A bedroom that goes from black to grey at half past four in June is handing her a wake signal an hour before you want one.
5. A genuine early feed. Some babies are properly hungry at five and some are not. If she feeds hard and goes straight back down, that is hunger; if she takes a token feed and comes up bright, it is a habit that has attached itself to the waking.
6. Five o'clock is being treated as morning. Lights on, curtains open, conversation, out of the cot. Do that for ten days and you have taught the hour rather than fixed it.

Why a later bedtime backfires

This is the counter-intuitive core of the page and the reason it exists, because pushing bedtime back is what everyone tries first and it fails more often than it works.

The logic seems sound — she is short of sleep at the end of the night, so start the night later. What actually happens is that a baby who was already a little short arrives at bedtime overtired, settles worse, sleeps heavily through the first part of the night and surfaces at the same time or earlier, now with less sleep in her than before. The following day is worse, the day sleep gets worse with it, and the whole thing tightens.

The move that more often works is the opposite one: bedtime fifteen minutes earlier, held for four or five days. It looks like the wrong direction and it is not, particularly in the weeks after a nap has gone, when the day is short of sleep and the front of the night is the only place left to put it. The AAP makes the same point about routines in general — putting a child to bed even fifteen to twenty minutes earlier can make a real difference — and it is truer here than anywhere.

If an earlier bedtime is clearly worse after a full week, that is information rather than failure. It usually means cause one is the live one and the day sleep needs rebuilding first. The sleep schedule generator will show you what the whole day looks like when you move one piece of it, and the totals by age page has the arithmetic behind the bands.

Light, and what it actually does

Light is the strongest signal a body clock has. The AAP makes the point when it talks about clock changes: exposure to natural light during the day helps reset a child's internal clock, because sunlight has a strong effect on the body's circadian rhythm. The same lever works against you at half past four in midsummer.

So blackout is worth trying early — it is cheap, it takes an afternoon, and it either helps within a week or rules itself out. Deal with noise at the same time if the road, the birds or a boiler start at five. If neither changes anything in seven days, stop adjusting the room; the cause is in the day, and you have usefully eliminated two of the six.

The other half of the same lever is the morning. The NHS's advice for teaching a baby that night is different from day works in both directions: curtains open, games and ordinary noise once the day has started, lights low and no eye contact or conversation before it has. Which means the hour you choose to call morning is doing real work — a dim, dull, wordless five o'clock is a different signal from a lit and cheerful one, and the difference between those two is often the difference between fixing this in a fortnight and teaching it.

How long it takes, and what it looks like while it works

Two to three weeks of holding one change, and expect it to get slightly worse first. That is the pattern most families report, it is unsourced, and it is on this page because the fortnight of patience is the part everybody skips.

Practically: move one thing by fifteen minutes. Write down what happened for four or five nights — bedtime, naps, the time she woke, whether she went back down. Then judge it. Three changes at once means you learn nothing about any of them, and something new every second night leaves her with no pattern to settle into. A printed day sheet is enough; the improvement is usually visible in a week of rows before it is visible in a morning.

Whatever hour she wakes at, the sleep itself is set up the same way: babies go down on their back, on a firm flat mattress, in a cot clear of blankets, pillows, bumpers and soft toys, in your room for at least the first six months. A blackout blind changes the room, not the cot — nothing extra goes in with her to make the morning easier. The safe sleep guide carries the whole of it, and the clock change page deals with the fortnight when the light moves without asking you.

What this is not

It is not a split night. A baby awake and cheerful for two hours in the middle of the night, who then sleeps until seven, has the opposite arithmetic problem, and there a later bedtime is the fix rather than the mistake — the split nights page covers it.

And it is not a moral question. Some babies wake early for months at a time with nothing wrong at all, night waking is ordinary well past the first birthday, and a six o'clock riser who has slept a full night is on a schedule rather than in trouble. If she wakes early and is cheerful all day, you may simply have an early riser and a bedtime to move to meet her.

When early waking is not a timing problem

A baby who wakes early and is unhappy all day, who is feeding poorly, not gaining weight, in pain, unusually sleepy at other times, or crying in a way that does not sound like her usual cry is not a scheduling question, and neither is a worry that will not go away or a household that has stopped coping. That is a call to your pediatrician, GP or health visitor, with your week of notes in your hand. This page is general information, not medical advice, and it cannot see your baby.