I have tonsillitis, finished my antibiotics but my tonsils are still swollen and white. i have 0 appetite, eating makes me nauseous but im still trying because i know i need to. any food recommendations besides soup?

No. Can't beat chicken soup. Tonsillitis is almost always due to a virus. So antibiotics do not help. Gargling with aspirin in water helps some. Assuming you are not allergic to aspirin.

This might have been a viral infection, which does not respond to antibiotics. Discuss the possibility of infectious mononucleosis ("mono") with your doctor. Good luck.