why is my baby not sleeping much from 1 week.. even after drinking milk, he just wants to stay awake and play. what could be the reason ?

A. After completing the time of three months I must tell you that slowly the sleep pattern is going to change and the sleep and the wake hours are going to increase because they gain their vision so they actually are very excited to look at their surroundings at different things which is being playful is normal and healthy but if the child is sleeping for at least 8 to 10 hours in the day then that is good enough