I found drug testing to be crazy-making for me. One of my "lows" on my trip to rock bottom was sticking my fingers into my son's cup of pee after a drug test he passed because I was sure it wasn't "warm enough." (It wasn't) Imagine that - a grown woman sticking her fingers into a cup of pee, and thinking that was a sane thing to do. INSANE.
You will do whatever works for you - but for me, the best thing for my sanity was to have my son out of my house. He comes home and visits , and we are moving towards a healthy relationship. But living full time with me would not be good for his recovery...and living full time with him would not be good for mine.