Please ask me directly for personalized diet plan for you.

Give him foods like in different way or in attractive look, if the food will good he wants to eat more and enjoy the food as well, normal ghar ka khana is sufficient with the interval of 2-3 hrs, do not gap for more than that. if he do not take plain milk add some protein supplement to it, give some fruit juice instead of whole fruit, it will take not more time to consume compare to whole fruit. Add green leafy vegetable to the whole grains like roti with green leafy vegetables in it with some salt as per taste, it will look tasty or attractive too.

Hello Detail conversations required to give u proper plan of treatment  I  need your detail case history to guide u properly if u wish to take proper treatment consult online through practo ap for proper management