Three weeks isn't much time for either one of you. Is he in AA or another recovery program? If so, and if he is working at it, it can take months before you realize the benefits of sobriety. If not, you may not notice much change.
What are YOU doing for your own recovery? Are you going to Al-Anon? Your recovery doesn't have to wait on his, nor should it.
And even if you are both working hard at recovery, like I said, three weeks isn't very long.