The average 2-month-old baby sleeps 14 to 16 hours a day. If your baby does not sleep during the day, this is an abnormality. The problem can be solved by supplementing enough formula or breast milk, taking calcium and vitamin D supplements, and creating a quiet environment, depending on the cause. 1. Insufficient breastmilk or formula feeding. When babies don’t have enough breastmilk or formula feeding, they will not sleep well because of hunger, so they should be fed properly. 2. Calcium deficiency, when the baby lacks calcium, will increase the baby’s nervous system excitability, so that the baby appears to have difficulty sleeping during the day, you can give the baby to take the appropriate amount of vitamin D, calcium carbonate D3, but the amount of vitamin D and calcium carbonate D3 should be under the guidance of a doctor. 3. The environment is too noisy, the baby needs to maintain a quiet and comfortable, soft lighting environment, but also to ensure that it is not too dim, otherwise the baby may appear black and white, so that the night sleep is affected.