My words are to focus on YOU.
Stop feeling guilty for him. He should feel guilty for all he has done. What is happening is a consequence of his own actions. He has resources, he went to rehab.
As long as you keep the focus on him, you will have a very hard time moving forward yourself. I would also say no contact at all as there is really no point in that, it only hurts you more.
Read my signature, it's so true. The longer you keep packing around all this anger and resentment, the more it hurts one person, you.
Hugs. I say this all gently b/c I know it's hard.