Having just had my first fill after almost three months, it's clear that there are differences between people and how they respond. I had steady weight loss without a fill for a long time....but I also tried to eat reasonably and avoid high calorie stuff. Because of my job, I have not been able to exercise at all. I lost steadily but slowly until 2 weeks ago. After my first fill, I again had an absence of hunger almost 24/7 as I did immediately post-op. In my case, I definitely had a response even without a fill, but YMMV. Stick with it, avoid lots of high calorie food (especially liquids), and it will work with you.