Its mostly about consuming raw animal foods especially raw liver, raw meat and animal fat to regenerate your body tissues to a healthy state. I mean the bigger problem is healing from the surgery i would say. And make sure to eat a lot of food, more than usual, if you cant eat that much raw meat, cook it very lightly on the surface to get the ability to eat more and faster but by losing some micronutrients, its ok, you need the extra "calories" now.

Also you need to drink 48 hour fermented raw milk to heal your gut from the antibiotics. This is the most important for specifically getting rid of antibiotics.

Some blood could be good extra to heal the damage from the IV but the normal raw animal foods do the job quite well.