The first thing I would do is put the wedding on hold. Unless you don't mind being married to an addict. He's stealing from piggy banks. Sound like a good life partner to you?
If you want him to clean up and fly straight, then two months is not enough time to determine if he will do anything about his problem. A year after rehab and his working a strong program of recovery would be the bare minimum. Drug addiction is no easy problem to fix. And this problem is his problem to fix. You can not fix this for him or help him fix it. You are not important enough to cause him to get clean and sober. His getting clean and sober comes from inside him. He has to want to fight this battle himself. At this point I don't think he's there yet. Maybe it will come.