Thanks for query,
Your weight is very less and should increase.
You go for stool for oca and cst to rule out warm infestation.
go for blood for anemia,any thyroid
Take plenty of green veges,fresh fruits,
Have nourishing diet ,more protein,pulses,cereals,eggs, dry fruits.
More milk with fat,butter,ghee.
Do not take steroid
along with protein powder,threptin bis.
Ok and bye.