How to Solve the Problem of a 1-Year-Old and 3-Month-Old Not Sleeping Well at Night?

A 1-year-and-3-month-old child is having trouble sleeping at night, often waking up in the middle of the night. The child prefers to sleep on their stomach during naps and has been experiencing these symptoms since weaning one month ago. The parents have consulted local doctors, who suggested a possible calcium and zinc deficiency, and are seeking advice on how to address this.
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