for weight gain which food should i gave to my 7 month baby right now his weight is 7kg nd his birth weight was 3kg

A. So if the weight it was 3 KG at the time of birth and now your child is seven at the time of seven months so that I really a proper weight gain that your child is having and I should suggest you to be proper proteins to the child healthy fats like Desi ghee and butter and proper dairy products