Hello, only protein intake will not be sufficient to put on weight unless underlying norms be opted, first. Go for meditation to nourish your entire body to strengthen your cell & tissues improving your body in a healthy manner by conditioning your bones. Tk, plenty of water to hydrate your body. Your diet be easily digestible ,high in protein- fish, eggs, chicken..Tk, apples, carrots, potatoes, sweet- potatoes, milk, almonds.
Tk, banana with hot milk in the breakfast.
Add ghee in lunch.
Go for aerobics.
Tk, homoeopathic medicine:
@ AlfalfaQ -10 drops, thrice with little water. Avoid, junkfood, ,alcohol & nicotine. Tk, care.