Having your band filled so that you feel satiety is the total key to making this work. New banders have a difficult time recognizing the satiety signals and fail to stop eating in time.
If your band is not filled as it should be, you will be hungry and you will make mistakes just as you did when you dieted. Keep getting fills till you can eat a small meal and stay satiated for up to 4 hours.
Do not throw in the towel. I went 4 months without losing a lb and it took 3 fills before I started to feel satiety and 3 more to reach the green zone.
