Hi my daughter is 3yr 7months she is underweight.. her weight is 12kgs.. what to do??

A. dear parent, for healthy weight gain of your 3 years 7 months old daughter, give homemade balanced diet having variety of food groups. grains and millets - 3 servings pulses legumes/egg non veg: 1 serving 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