My surgery is on June 13th. My bmi is 37. I had to do the protein diet. I started Monday so this is day 5. The first 3 days I had my 2 shakes and one grilled chicken breast with steamed broccoli. Yesterday and today I have stuck to it and it has been a lot easier. I thing it's the initial detox. But feeling good now. As of this am I have lost 7 pounds. My doctor allows sugar free Popsicles, broth and even low fat soups like cream of chicken. 24 hours before nothing but clear liquids. The hardest part has been the social aspect. It's Friday night and normally we would go out to eat but are staying in.