Acalculous cholecystitis. Me doctor.

I was diagnosed with acalculous cholecystitis 1 month ago. I was on treatment for 21 days and now my medicines have been finished. I was also diagnosed with grade 2 fatty liver in my usg abdomen. My doctor has told me to continue the medicines and after finishing them I will be fine but nowadays when I eat food I feel heaviness and sometimes I also feel stomachache in the middle part and left part. Now what should I do, actually there was a sludge in my gall bladder and my doctor me to consult him after the course but at this time I can't visit there. So my course has completed and what diet should I take. He also told me not to eat maida and besan strictly. But now after finishing medicines, i don't eat maida but I eat besan sometimes because I m living in hostel as a student that's why I can't cook food here. Now what diet should I take. Please tell me doctor.