Glossary

Sleep basics

A short glossary of the terms Ceddie uses. These aren't recommendations for your baby, just plain definitions of what each word means and how it shows up in the app.

Nap

A nap is any stretch of daytime sleep, separate from the long sleep at night. In the early months babies tend to take several short naps a day, and those usually consolidate into fewer, longer ones as your baby grows. Good daytime sleep takes some pressure off the night, so naps and night sleep work together rather than as two separate problems.

Catnap

In Ceddie, a catnap (also called a bridge nap) is a short, deliberate nap late in the day that bridges the gap to bedtime. When too long an awake stretch would otherwise build before night sleep, a brief catnap takes the edge off so your baby isn't overtired. Short naps are common in the early months generally, but Ceddie uses 'catnap' specifically for this late-day top-up.

Nap transition

The shift from more naps to fewer (four to three, three to two, and eventually two to one) as a baby's sleep consolidates with age. Transitions happen in rough age windows and unfold over a few weeks, with uneven days along the way: some days the old count still fits, some days the new one does. Ceddie watches for the real readiness signs in your logged days, checks them against your baby's own recent baseline, and shifts the schedule day by day when a transition is genuinely underway. It tells you which stage you're in instead of flipping on a month birthday.

Sleep regression

A temporary rough patch (shorter naps, harder bedtimes, more night waking) that shows up at roughly predictable ages, often around developmental leaps. From the trenches it can look a lot like a nap transition, but it's the opposite: disruption rather than progress, and it passes. Ceddie expects regressions and holds the schedule steady through them instead of dropping a nap your baby still needs. When sleep quality has dipped against your baby's own recent baseline, Ceddie reads it as a rough week, not a reason to change the plan.

Wake window

A wake window is how long your baby can comfortably stay awake between sleeps before tiredness tips into overtiredness. These windows get longer as your baby grows. Getting them right is one of the biggest levers for easier naps and smoother bedtimes: too short and your baby isn't tired enough to settle, too long and an overtired baby fights sleep. Ceddie builds the day's schedule around your baby's wake windows.

Awake time

Awake time is how long your baby has actually been awake since their last sleep ended. It's the running clock, while the wake window is the target. Put the two side by side and you can see whether the next nap is still a way off or coming up soon. Together with your baby's tired cues, that's what helps you reach for the nap before things slide into overtired territory.

Wind-down

Wind-down is the short, calming stretch right before sleep that helps your baby shift from awake to asleep: dimming the lights, lowering voices, moving through a familiar routine. It's the on-ramp to sleep rather than sleep itself, and even a few quiet minutes can make settling easier. Ceddie flags when wind-down should begin before bedtime, so the cue to start isn't one more thing to track in your head.

Settling

Settling is the gap between putting your baby down and them actually falling asleep. Tracking it is optional, but it tells you something: a settle that's regularly long may mean the wake window beforehand was slightly off, too short and your baby isn't ready, too long and they're wired. Over time, how quickly your baby drifts off hints at whether the timing around sleep needs a small adjustment.

Bedtime

Bedtime is the start of night sleep, the longest and most restorative stretch in your baby's day. A workable bedtime depends on how the day's naps actually went and how long your baby has been awake since the last one, so it isn't one fixed time. Ceddie suggests a bedtime each evening from the day's naps and wake windows, and nudges it earlier or later as the day calls for it.

Night sleep

Night sleep is the long overnight stretch, from bedtime through to the morning wake-up. It's where the deepest, most restorative sleep happens, and for most babies it makes up the biggest share of their sleep across the whole day. Because daytime and night sleep draw on the same overall need, how the day goes and how the night goes tend to be closely linked. A rough day often shows up after dark, and the other way around.

Night wake

A night wake is any time your baby stirs and wakes during the night. Some are completely normal, especially for younger babies who still need night feeds. Others can point to wake windows, naps, or bedtime timing being slightly off. Tracking them over time helps you see whether they're improving and what tends to trigger them.

Net sleep

Net sleep is how much your baby was actually asleep overnight, once the time spent awake during night wakes is taken out. A night can look long from bedtime to morning, but a few drawn-out wakes in the middle mean the real total is lower. Seeing net sleep next to the full overnight span shows how restful the night was, not just how long it lasted.

Expected wake

Expected wake is Ceddie's estimate of roughly when your baby will wake in the morning, based on when bedtime started and how long babies their age typically sleep overnight. It's a best guess, not a promise. Every baby keeps their own clock, and plenty of mornings won't match it exactly. A rough anchor still helps: it gives you somewhere to start when you plan the next day.

Schedule

Your schedule is Ceddie's plan for the rest of the day: the upcoming naps, the wake windows between them, and a suggested bedtime. It's built from the sleep you've already logged today and your baby's recent patterns, so it reflects the day you're actually having rather than a fixed timetable. When something shifts, like a nap running long or getting skipped, Ceddie reworks the rest of the day so the plan keeps up.

Ceddie's note

Ceddie's note is the short, plain-language explanation that sits alongside your schedule and spells out the reasoning behind it. It might cover why a nap is best wrapped up around a certain time, why bedtime moved a little tonight, or what to keep an eye on as the day unfolds. You're never just handed times. You can see the thinking, weigh it against the baby in front of you, and adjust.

Sources

Ceddie's age-based guidance draws on published pediatric sleep research and clinical guidance. Key sources include:

Ceddie's age-band guidance is also calibrated against publicly available guidance from practicing pediatric sleep consultants.

Ceddie isn't medical advice. If anything about your baby's sleep worries you, talk to your pediatrician.

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