I was in a 90 day rehab in '89.
I suggest you talk to his group leader or whoever is in charge at the facility where he is. My recovery home had meetings for spouses and I think your concerns are best answered by the professionals who have been with him for 3 months.
God works in mysterious ways. Never give up but cover all the bases yourself as best you can.
All the best.
Bob R
(I can still get in a fog today because I'm an alcoholic and always will be... or at my age it might be early Alzheimer's ??!!)