I had a two week pre op diet, they had me eating small portions of lean meat and as many veggies as I wanted. I can't remember exactly how many oz of meat they had me eat ( it's been over a year) I just remember it was really small. When I got hungry I just ate veggies, don't be super hard on yourself, but I agree although it was hard it was nice to feel basically cleaned out going into it. I also dropped like 13 pounds in that two weeks! Keep the good work up, you will do great!