Seriously, this is one of those times where you ask your doc about the healthiest crash diet you can do while in hospital. If it's about getting rid of excess weight for their algorithm you have to be serious about it being swift. Not that a good doctor would help since stressing a new liver 3 weeks post op with Wendy's to "treat yo self" basically ruins the sacrifice and effort that went into getting the transplant in the first place, but explore all options FFS. Oh wait, that takes effort........