Enter your baby's approximate day and night sleep hours to see whether the pattern looks reversed and to get steps that gently shift sleep towards the night. This is an approximate reference, not medical advice; for any health concern or emergency, contact your pediatrician or emergency services, and follow WHO, CDC or your local health authority guidance.
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How to Use the Day-Night Reversal Tool
Enter your baby's age and roughly how much they sleep in the day and at night, then press Show Steps. The tool estimates the split and suggests a reset.
Reading the result
Newborns have no body clock yet, so day-night confusion is common and temporary.
Bright, active days and boring, dim nights help set the rhythm.
Waking your baby at a consistent morning time anchors the day.
Change happens over one to two weeks, not overnight.
Features
Estimates whether sleep is concentrated in the day or night
Step-by-step reset for daytime and nighttime
Practical tips on light, feeds and naps
This is an approximate reference, not medical advice; for any health concern or emergency, contact your pediatrician or emergency services, and follow WHO, CDC or your local health authority guidance.
All processing runs locally in your browser. Your data is not uploaded to any server.
Keep night feeds available as your baby needs them while you shift the rhythm. Contact your pediatrician if your baby is very sleepy, hard to wake or not feeding well.