Hi, Welcome to Health care magic forum.
As you describe, you need some more weight. You can have with the assistance of medicines.
I advise you to consult a physician for diagnosis and treatment .
I usually prescribe to my patient with such condition, injection of
anabolic steroid, multivitamins, calcium, and
protein supplements.
Take more of green leafy vegetables, pulses, sprouts, and protein rich foods,calories, fats, fries, occasional junk foods to have good health
Sleep for little more time practice early to bed and little late to wake up. Try to sleep for some time in the day time.
Wishing for a quick and complete recovery. Thank you.