Hello Dr. My son is 4 year old.. He is not gaining weight.. His weight is only 11 kg what do I do#AskTheExpert

A. dear parent, for healthy weight gain of your 4 years old son, give homemade balanced diet having variety of food groups. grains and millets 4 servings pulses legumes/egg non veg: 1-2 servings seasonal vegetables including green leafy vegetables: 1.5 serving fruits - 1 serving milk and milk products 500ml sugar 4 tsp oil 5 tsp control intake of processed and packaged foods.