I'm Nervous my Surgery is in 10 days and I'm really struggling with the Protein drinks already! Having trouble drinking them and keeping them down worried what will happen after surgery if I cant drink protein drinks? I'm 5"6 weigh 320 and need the surgery. any recommendations? I started the liquid diet 14 days out but then my DR moved my surgery up two days (Feb 6 2012) so I really need to get this protein drink thing down They want me to drink four drinks daily 20-25 grams protein each day prior to surgery with the liquid diet. Any good suggestions?