this is a painful place to be. Been there, a thousand times over. Advice is that - these drugs don't let people go. It's a life long battle and it robs all involved of everything they have and everything that they are.
I wish I felt idyllic about it and could say something soft and gentle but frankly, there isn't anything like that. It's an evil battle and deadly to more than finances, physical, mental or emotional stability. You will find yourself in a fight for your sanity. Please find a meeting and read Co-dependent No More by Melody Beattie. Work on your healing, he is the only one who can help himself.
Each time we read a new story, it pains us too. We know what you feel and where this will take you because we have been there. We would love to save you from that - but like the addict's own recovery - you must control your destiny and love your life not only for you but for those who love you.