If you can tell me your present body weight, height then I can be specific. Any how u require high calorie diet with msx.cereals enriched with protien mainly animal protein like milk,eggs,fish etc. Add pulses,dry fruits nuts,almond ,banana, apple all these are helpful. Your calorie should be more than so always try to intake good high calorie food products apart from  allergy causes. Take min 8 hours sleep,no stress,warm & fresh current dated foods.You may follow up questions if any doubt .Thanks