Hey, I understand what you are going thru, I did not get restriction until my 4th fill (now at about 9cc's in a 14 band).
This early time is very important to get numerous fills. If at all possible I would go ASAP and then maybe again at the end of the month.
Another thing that has been helping me is 1) working out and 2) tracking what you eat and noting the number of calories. As I started to track I started to make better choices which has helped in my WL. I am not losing at a fast pace but at least I am losing.
The one other option, which I did not do but had a friend do was take a small dose of some type of appetite suppressant until she was able to get good restriction. Maybe your doctor could give you a prescription (maybe for only a month) so it can help you from gaining until you get good restriction.
Message me if you want to talk further. Keep strong, it does work eventually.
Angelique