How to Adjust Your Baby’s Sleep for the Clocks Going Forward
The clocks go forward on Sunday 29th March 2026 at 1am, and if that sentence just sent a small wave of dread through you, you’re not alone in that reaction.
When you’ve spent weeks or months piecing together a sleep rhythm that mostly works, the idea of losing an hour feels genuinely threatening. Will bedtime fall apart? Will the early waking get worse? Do you need to do something now?
This post walks you through exactly how to adjust your baby’s sleep for the clock change - whether you want a gradual plan, a simple two-day approach, or whether doing nothing at all is actually the right call for your family. There’s no one-size-fits-all answer here, and that’s the point.
What the Clocks Going Forward Actually Does to Baby Sleep
When the clocks spring forward, the time on the wall jumps ahead by an hour - but your baby’s internal body clock doesn’t. Their circadian rhythm keeps ticking along exactly as it was.
What that means in practice: the bedtime or nap time that felt right yesterday now sits an hour ‘earlier’ by the new clock. A baby who normally goes to bed at 8pm will, on Sunday night, feel like it’s only 7pm. They haven’t built up the same sleep pressure, they won’t feel ready, and settling may take longer.
The same thing happens in the morning. The 6am wake-up becomes a 5am wake-up by the new time - at least initially, while their rhythm catches up.
For most babies and toddlers this resolves within a few days to a week, sometimes slightly longer for younger babies or those who are more sensitive to schedule changes. The body clock responds to light, routine, and daily rhythm - and with a little support, it re-aligns.
How much you need to do depends entirely on your baby and your household. Below are three approaches - choose the one that fits.
Option 1: The Gradual Adjustment (Best for Sensitive Babies)
This is the most gentle approach, and works especially well for younger babies, babies who struggle with any change to their rhythm, or those who have only recently found a pattern that works.
Starting on Wednesday evening, shift bedtime 15 minutes earlier each night, so that by Sunday your baby’s body clock has moved forward gradually rather than all at once.
Wednesday night: bedtime 15 minutes earlier than usual
Thursday night: bedtime 30 minutes earlier than usual
Friday night: bedtime 45 minutes earlier than usual
Saturday night: bedtime a full hour earlier than usual
By Sunday morning, their internal clock has quietly shifted to match the new time. Apply the same logic to nap times across the day if your baby is on a fairly predictable nap pattern.
If Wednesday feels too soon to start, you can compress this into Thursday to Saturday using 20-minute increments instead. It’s a little more of a jump each night, but still gentler than doing it all at once.
Option 2: The Simple Split (Good for Most Families)
If a four-day plan feels like too much to manage, a simple two-step approach works well for most babies and toddlers.
Saturday night: move bedtime 30 minutes earlier than usual
Sunday night: bedtime at what is now the ‘new normal’ time on the clock
This means your baby arrives at Sunday night about halfway adjusted, then takes a few more days to fully settle into the new time. Some families prefer to split it even more simply - just shift bedtime 30 minutes earlier on Saturday and let the body clock handle the rest naturally over the following days.
Both variations work. The split approach is the most practical for families who can’t face four days of incremental shifts.
Option 3: Do Nothing and Let Your Baby Adjust Naturally
This is a genuinely valid option, and often the most underrated one.
Most babies and toddlers adapt to the clock change within a week without any deliberate adjustment, particularly if their daily routine stays consistent and they’re getting good exposure to morning light.
When my own children were small, this was the approach I took. Bedtime stayed the same on the clock, sleep was a little unsettled for a few days, and then their bodies caught up. No plan needed.
This approach works best if your baby isn’t particularly sensitive to routine changes, if sleep has been reasonably settled, or if life simply doesn’t allow for a gradual wind-down period in the run-up to the weekend.
The key is to keep everything else as regular as possible - the pre-sleep routine, the environment, the morning wake-up time - and trust that their body clock will do the work.
If Your Baby Already Wakes Too Early - the Clock Change Can Help
This is the one time the clocks going forward works in your favour.
If your baby is currently waking at 4.30am or 5am, that wake-up becomes 5.30am or 6am when the clock changes. It won’t stay there permanently without some work on the underlying rhythm, but it does give you a genuine window to gently shift things forward.
The most effective approach in this case is to do nothing ahead of the weekend - let the clock change create that natural shift - and then hold the new times as firmly as you can in the days that follow. Push the first nap a little later, hold bedtime at the new time even if your baby seems ready earlier, and protect morning light exposure.
Early waking is usually about where sleep is sitting across the whole 24 hours rather than just bedtime, so if it’s been a persistent pattern, the clock change buys you a head start rather than a permanent solution.
If you want to understand the full picture of what drives early waking, my Early Waking Masterclass covers it in depth.
What Actually Helps Your Baby Adjust to the Clock Change
Whichever approach you choose, these are the things that genuinely support your baby’s body clock as it re-aligns.
Morning light is the most powerful tool you have
The body clock is regulated primarily by light, and bright morning light in the first hour after waking is one of the strongest signals it receives. Get outside early, even on a grey March morning, natural daylight is far more powerful than indoor light for setting the circadian rhythm. The link between outdoor time and sleep is genuinely significant, and spring is a brilliant time to lean into it.
Use blackout blinds in the evenings
Lighter evenings are one of the trickier parts of BST for babies. Light signals wakefulness to the brain, so a bright room at 7pm can make settling harder even when sleep pressure is high. Good blackout blinds make a meaningful difference, especially for younger babies and toddlers who are sensitive to light cues.
Keep the pre-sleep routine consistent
Whatever you do before sleep - bath, feed, song, wind-down - keep it the same. Routine sends powerful signals to the nervous system that sleep is coming, and that predictability matters more during an unsettled few days. If bedtime is a bit of a battle right now, this post on why bedtime feels so hard might help.
Your own calm is part of the environment
If you’re tense or clock-watching, your baby will feel it. That’s not a criticism - it’s biology. You co-regulate their nervous system, which means your state directly influences theirs. Prepare yourself before the settling window: eat beforehand, have a drink nearby, and go in with low expectations for the first few nights. When you’re calm, settling is easier. Not perfect, but easier.
Give it a week before you worry
A few nights of unsettled sleep after the clock change is entirely normal. It doesn’t mean you’ve lost ground or that something has gone wrong. Babies are more adaptable than we give them credit for.
If you want to go deeper on rhythm-building
Baby Sleep Builder works with your baby’s actual sleep patterns rather than generic wake window charts. If the clock change has highlighted that timing and rhythm have been feeling off for a while, it’s a good place to start.
Adjusting to the Clock Change by Age
Newborns (0-3 months)
Newborns don’t yet have an established circadian rhythm, so the clock change tends to affect them less than older babies. Feed and respond as you normally would, get some fresh air in the morning when you can, and don’t overthink it.
Babies aged 4-6 months
This age group can be more sensitive to disruption, particularly if you’ve recently started to see more of a pattern emerge. The gradual adjustment method works well here. The 4-month sleep progression is already a big shift in sleep architecture, so if things feel unsettled you can read more about what’s happening at 4 months here.
Babies aged 6-12 months
More adaptable than younger babies, but routine matters more now too. Either the gradual or simple split approach works well. Morning light and a consistent wind-down routine are your best tools.
Toddlers (1-3 years)
Toddlers are often the ones parents worry about most, but they adapt reasonably well with boundaries and a predictable routine. Lighter evenings can delay settling, so blackout blinds are particularly worth it at this age. If toddler bedtime is already a challenge, this post covers the wider picture.
It Will Pass and It’s Not as Fragile as It Feels
Every year, parents brace for the clock change like it’s something to survive. And I understand that. When sleep is already feeling thin, any added disruption feels like a lot.
But most babies adjust within a week. Their bodies are designed to respond to light, routine, and the cues around them. A few unsettled nights is not the same as going back to square one. It’s just recalibration.
Choose the approach that feels manageable for your family. Keep things as predictable as you can. Get outside in the morning. And give it a few days before drawing any conclusions.
If you’d like some support with your baby’s sleep beyond the clock change, my free sleep guide is a good starting point. And if you’d like something more tailored, you can find out about working with me here.
Frequently Asked Questions: Babies, Toddlers and the Clocks Going Forward
When do the clocks go forward in the UK in 2026?
The clocks go forward at 1am on Sunday 29th March 2026, moving from GMT to British Summer Time (BST). You lose one hour.
How do I adjust my baby’s sleep schedule for the clock change?
There are three main options: a gradual adjustment (shifting bedtime 15 minutes earlier each night from Wednesday), a simple split (30 minutes earlier on Saturday), or doing nothing and letting your baby adjust naturally over a few days. The best approach depends on how sensitive your baby is to routine changes.
How long does it take for a baby to adjust to the clocks going forward?
Most babies and toddlers adjust within a few days to a week. Younger babies or those who are more sensitive to schedule changes may take up to two weeks. Consistent routines and morning light exposure help speed up the adjustment.
Should I wake my baby at the normal time after the clocks change?
Yes, where possible. Keeping the wake-up time in line with the new clock helps anchor the rest of the day’s rhythm.
Will the clocks going forward make my early-rising baby worse?
Initially, the clock change actually shifts an early wake-up an hour later by the new time. A 5am wake becomes a 6am wake. Whether it stays there depends on the underlying sleep pattern, but it does give you a useful window to work with.
Do I need blackout blinds for the clock change?
Blackout blinds aren’t essential, but they’re genuinely useful when the evenings get lighter. Light signals wakefulness to the brain, so a bright room at bedtime can make settling harder even when your baby is tired.
