Dear Akrasia,
hope things are better for you today.
I think you're doing good, as you're doing the thing you believe it is right. I believe that to be very important.
I did the same thing for my RAH a year and a half ago and than again 8 months ago. Yes ideally he should have do it himself, but he was nowhere near the ability to arrange all that for himself.
I never regreted it, as both times it happened he was close to dieing, and I don't think it would be easy for me to deal with it later if I knew there was something I could do but didn't.
I believe that addict whose disease progressed so much do need help. Help to make treatment possible, if that is something we can help with, of course the rest is up to addict him/herself.
I don't want to alarm you, but from my experience swollen legs are very bad sign in regard to liver function. I must admit I dind't understand when are you going to get those results. From my experience sooner the better.
I wish you well!
Keep us posted.