my baby is 7month and she haven't started sitting on her own or crawling yet. Is anything to worry.

A. Not as of now because you’re expecting it early as a child learns to sit independently by the time of eight months to 8 1/2 months or maximum nine months and then we talk about crawling that is between the age of 9 to 11 months so best is to put your child on a floor on a mattress you will slowly the child is going to achieve all the milestones