Hey Debbie,
I was in same situation as you. Look at my fill history after my name and you'll see. I didn't get restriction until the third fill. So get another fill- and another one after that if you need it- and so on. Be on top of it (which it sounds like you are). Don't wait too long, but be safe.
I felt the same way- like I was going to fail at this. But once I got the right amount- it worked. You really won't be able to eat a lot. Really. I have lost 23 pounds, which is about 2 pounds a week since my first fill. I lost NOTHING the first month- talk about depressing!
Do what you are supposed to do (right fills, water, protein/right foods, exercise) and it WILL work. I've been where you are and soon you will be where I am. My email is kcuillard@hotmail.com if you need some more personal encouragement.