You are correct it is his recovery. Leave it at that.
As a side note, I will share that back in June of '81 the only 'treatment' really available was AA. Now I had died, literally and the 'experts' at the hospital sent me to AA. That was 28+ years ago and I have been sober and clean since.
You see, it is NOT the program or programs, it is the DESIRE of the individual and IF they really want recovery.
How about you work on you, and leave him to work on him?
J M H O
Love and hugs,