Does late night sleep in infants affect growth and development?

Patient's question:

My baby is now 100 days old. Since birth, she has been sleeping from 12 a.m. to 1 a.m. During the day, she sleeps a lot, but if held and put down at night, she wakes up. She insists on sleeping only after 12 a.m. I've tried letting her sleep less during the day, but she still stays up late at night. Her feeding is normal—she is breastfed—and her weight has doubled since birth. Is this normal? Will it affect her growth and development? What are some good solutions?

Doctor's answer:

The baby has difficulty falling asleep at night and wakes up easily after lying down. It is likely due to increased nervous excitability caused by calcium deficiency.
1. It is advisable to consider whether the baby is calcium-deficient. You can give the baby some calcium gluconate oral solution and combine it with cod liver oil to enhance calcium absorption. Additionally, you can also give some bone-strengthening granules.
2. Supplementing calcium while reducing daytime sleep a bit can be beneficial for stabilizing the baby's deep sleep at night. Also, avoid letting the baby eat too full or engage in overly stimulating activities before bed.
Wishing the baby healthy growth~

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