Hi Fitz1991,
Welcome to the forum. There is loads of people on here all in the same situation, and great to chat to.
My Son is in Recovery, he lives at home with me. He says that when you are in recovery you become selfish and they need to be able to focus on themselves, especially in the early stages of recovery, perhaps this is why you feel he is pulling away from you at the moment.
Just give him time and just let him know you are there for him if he needs you.
I hope this helps just a little bit, there are other people who are far more experienced than I am, but joining this forum has really helped me.
Take care
Dx