Mu- this time away from him work on your program. Do u have any alanon meetings to attend? His mother will enable him the rest of his life, and will probably allow him to end up killing himself. You don't want any part of that. Break away. Read as much as you can about addiction.
He will never get better if everyone takes care of him. Go no contact with him. They say it's not that easy to get an addict out of your life so I am sure he will reappear. Work on supporting you and not enabling him. Hugs my friend, I am sorry that the man you love has a horrible disease!!! Stay strong and let him be.