hi heroine, welcome to sr. i'm sorry this is happening for you but i'm glad you joined us. sorry to say but there is really nothing you can do to help him other than to keep the focus on you and what you need to do to make your life more peaceful. he'll have to help himself. i'm glad to hear that he is trying and is detoxing but imo, detoxing would be better left to the professionals unless you are one.
do he have a plan of recovery after he detox. is he going to meetings, or have a sponsor?
detoxing is only the beginning of recovery, the hard part begins afterwards and is a life long process. are you willing to take a chance at living with this over and over yr after yr? know that this is a possibility.
maybe you could search your area for alanon or naranon f2f support groups for yourself and attend as many meeting as possible. keep posting and reading here. take care of you.