When a baby will not sleep, the most useful first move is not a clever sleep technique. It is a calm check for anything that needs care now.
Start with feeding, breathing, color, temperature, diaper, congestion, pain, unusual crying, and anything that changed suddenly. A newborn who wakes often to feed may be doing exactly what a newborn is expected to do. A baby who suddenly refuses sleep and also seems uncomfortable may need a health question answered before a routine question.
Try to separate sleep resistance from distress. Sleep resistance can look like bright eyes, squirming, protesting the transition, or repeatedly asking for a familiar cue. Distress may look like a weak or unusual cry, difficulty breathing, blue or gray color, extreme sleepiness, poor feeding, repeated vomiting, fewer wet diapers, fever, or pain that does not settle. You do not have to diagnose the reason to know when ordinary troubleshooting should stop.
Try tonight: complete one slow head-to-toe check, meet the obvious need, then return to a simple sleep sequence. Avoid changing the schedule, room, feeding approach, and settling method all at once while you are still unsure whether your baby is comfortable.
Get medical help: seek urgent care for breathing difficulty, blue or gray color, seizure, unusual floppiness, or extreme difficulty waking. Call your pediatrician promptly for a baby 3 months or younger with a rectal temperature of 100.4°F (38°C) or higher, or whenever feeding, hydration, pain, responsiveness, or a sudden change worries you.
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