Early recovery is all about him right now. It's what they tell them in rehab too. He's got to be even stronger when he comes out of rehab to resist all temptations. I know you're over it. Maybe you can detach a bit longer till he finds middle ground and balance. He's right where he's supposed to be in his recovery and you would not want it any other way. I hear this frequently in my aftercare... family expects instant change from the addict after a long time of being insane and crazy, and if a miracle happens and instant change happens it upsets the family dynamics. If you are the codependent person in the relationship, he's not needing you in the same way hits your vulnerable buttons and causes this tension.
All I can say is try to relax if you can with him.