my son is 9 month old his weight is 9.5 kg at 7 month old his weight was 9.5kg no changes , he didn't gain any weights is there any problem ???

A. at 4-6months weight will be double the birth weight and at one year three times the birth weight.. baby has a good weight.. add weight gain foods as potato sweet potato ragi dalia eggs banana dry fruits as cashew almonds walnut in paste or powdered form ghee butter cheese in moderate amount..