#asktheexperts Can you share the developmental milestones according to age

A. Hello good evening !! By 3.5-5 months babies roll over,hold the neck and the head ,social smile,observe surroundings,sounds ,able to recognise mother,family members ,expressions tried to hold the things with hands ,keeping hands,fist into the mouth,drooling,able to sit with support around 5-6 months. Crawls ,sits independently 6-8 months.