Doesn't sound like he's really working a program seriously - 12 steps in one month? And then done with AA? Doesn't sound like he has come to terms with this being a life-long struggle. But that's HIS problem.
Sounds like you are moving on with your life - step by step. Good for you. I know how hard it can be to start over - I'm working on that myself right now. Do what's right for you and your kids. You'll get there!