dandylion

Sybil....I think the best support is to just get out of his way....in other words...don't be obstructive and don't enable him. Just consider that anything that is recovery related, as "his work".
Don't pry, or ask a lot of questions
Steer clear of him and give him space if he is moody or irritable (keep yourself otherwise occupied)...
Keep your expectations of him very low. Don't expect that he will become the loving, attentive husband of your early relationships....He may, very well be distant and preoccupied.
Spend time on your own self and your own issues and stay as detached from him as possible.
Understand that he doesn't need you to help him with his recovery....that is better done by others...his counselor, his AA friends, his sponsor...Any of your efforts to "help" are likely to be resented.
You don't need to praise him, either. You can be glad for him, sure...but don't push the envelope....
don't be afraid to rock the boat...by being a normal human being. No walking on eggshells...He has to learn to live life on life's terms.

those are just a few tips...lol....