I think anything you say about your own recovery efforts, at this point, will only be perceived by him (and maybe unconsciously intended, by you), as a "reminder" to him that he better (a) appreciate your efforts, and (b) work on his own recovery and let you know what he is doing about it. IOW, it's a form of manipulation on YOUR part.
You still seem to think that unless you discuss it with him, it will be "back to business as usual, let time pass and then he will relapse." The discussion won't stop him from relapsing if he's going to relapse.
Life would be SO much simpler if we had a crystal ball and could know what was coming down the pike so we could prepare for it. Unfortunately, we don't, and we can't. We have to live and make decisions without perfect knowledge.
Keep working on the detachment. You don't need to announce it--that kind of defeats the purpose, anyway.