Recommend Diet Foods During AKt4 Administration For Knee Tuberculosis

Hi,My aunt is administered AKt4 for her tuberculosis of knee. She is very weak and has been vomiting not allowing her to go for a proper diet. Due to this she is fearing to eat or drink anything. Can you suggest what should be the best diet provided to her. We are pure vegetarians.
We have given her coconut water, juice, curd rice, idli, mashed rice etc.,