Originally Posted by
akrasia 
Do I try to tell him I want to go back to being close friends whilst he goes through his treatment?
HI akrasia. I think the above is your gut feeling on this and I personally think you are spot on with it.
I went back and skimmed a couple of your previous posts to refresh my memory and you know, you are that helpful person that people can rely on and turn to and I commend you for that (I really do).
He obviously relies on you and I'm sure he appreciates all you do, but you are in that situation again where he checks out emotionally and you just don't deserve that and as you said you are not up for another round of push - pull. It may not be alcoholism, it may be steroids (or PTSD etc) but the result to you is the same?
I hope you bring this back to you. I recommend focusing back on yourself and as I said above, your gut feeling is right, detaching a fair bit in this situation is a wise move I think.