Required wt gain tips for my son,who is 7yrs 11 m

A. My best to increase the weight of your child is to give a balance that plus good proteins into them but at the same time you have to know and understand that this is a very good age to enrol your child into sports like swimming basketball squash tennis karate gymnastics whatever you like after the age of five so right now even if you enrol that will help in increasing the appetite with good physical activity and the growth would also be better