Hi all, thanks for the responses.
I have no idea what he needs to do to actually not drink anymore, whether an in-patient treatment program or an out-patient treatment program is better. And I could do a literature review of all the latest studies to find out, but I don't want to because I already have a profession and it's not as an addictions specialist.
It is heartening to see him say, for the first time since I've known him, "I don't want to drink anymore." But my gut tells me one needs more than just weekly sessions with a counsellor to make such a leap, no matter how committed one is. It's like acknowledging you have cancer and then saying, "Naw, I won't get chemo, I'll just beat it through positive thinking!"
So thanks again for all the food for thought, and I'll see how it goes tomorrow. I'm trying to think: what would induce me to stay at this point, if anything? If he starts a treatment program that's more than just the counselling? If he starts medication? I'll ask the drink counsellor what he thinks.
(Also, I need to remember to just call the counsellor Tony when we meet. My husband and I know a lot of "Tonys" so between ourselves we've been calling him "Drinking Tony." Which, you know, he might not appreciate.)