I had an AA sponsorwhen I first got clean, but I went to NA meetings...this made me confused a lot of the time. AA and NA are similar programs of recovery, but they are different in a few very important ways.
For me, I found a home in NA and I switched sponsors when I had about 3 months clean. It was dangerous for me to go to an AA meeting when someone would talk about smoking pot or eating pain pills and still being sober b/c they didn't drink. I can't do that. NA is a program of complete abstinance from all drugs. I need that rigidness.
Meth is a dangerous and scary drug. Maybe he would be better served in NA where he could find a greater level of identification since his problems go farther than alcoholism? Get him to check it out and to "get in where he fits in" whichever program that may be...
Good luck, I'll pray for you both...
Blake