hii my baby is 8 months old now he is 6.3 weight.His birth weight is 2.6 and he started to crawl using stomach and he is sitting on support but not his own

A. Child can learn to sit by the time of 8 1/2 to 9 months to give it some more time try to make your child sit for a longer duration at a stretch with support and crawling will happen between the time of 9 to 11 months so hopefully the child is going to attain the milestones with progressing age