I am now 5 week post op. I would recommend sticking to the pre op diet as best as you can. I followed all of docs rules and it really helped me heal after surgery. I lost 20 pounds before surgery by following diet and working out. After the surgery I was feeling pretty good about three days later. Doc said it was because I prepared my body for the change. It got my body and mind set. Good luck and congratulations. The surgery has changed my life.