Library
Everything Cradle draws on (36 passages). Each topic is a plain-language summary written for this project — paraphrase with attribution, not quotation. See Sources for what it's grounded in.
Infant and Toddler Sleep: What's Typical
The principle
Sleep needs and patterns vary a lot by age and by individual child. Broad, commonly cited ranges (not guarantees for any one child): newborns sleep in short stretches around the clock; by around 4-6 months many (not all) babies can sleep longer stretches at night; by 1 year many toddlers take one nap; sleep regressions around developmental leaps (rolling, crawling, walking, language) are common and usually temporary.
Why "sleeping through the night by X months" claims cause unnecessary worry
"Sleeping through the night" isn't a fixed milestone with a universal deadline - it depends on the individual child, feeding needs, temperament, and environment. A baby not doing it "on schedule" is common and not automatically a problem.
On sleep training methods
Multiple approaches exist (gradual extinction, chair method, no formal training at all) with different levels of evidence and different fit for different families' values and temperaments - there isn't one universally correct method, and presenting one as the only valid approach overstates the evidence.
When it's worth a pediatrician visit
Loud snoring with pauses in breathing, extreme difficulty waking, or a sudden major change in sleep pattern are worth mentioning; ordinary night waking and short naps generally are not.
Themes
sleep, sleep training, sleep regression, napping, infant sleep