I think when he finally looses me, he'll want to quit
That, too, remains debatable. He may see that his addiction brought the consequence of losing you, and he may wish it wasn't so, but there is still a big jump to wanting to quit for real.
Many also later face the fact that if their loved does go through recovery, the relationship is still broken.
And no, I'm not trying to be a negative Nancy here. I'm trying to encourage you to continue your acceptance efforts and see beyond the "will he or won't he stop", but beyond that to what if he does stop or what if he doesn't.
A few thoughts that helped me in the step of acceptance was to count the rungs on the ladder of recovery for my XABF and for me. There are 12 in AA and those don't include the internal steps of tackling the childhood issues that started him drinking and started me in my codependence. It also doesn't include the steps to repair our broken relationship if we ever tried.
My X stopping the booze, and my stopping my enabling were the least of the problems.
It's a long road. We are here with you. Stay strong!!
Alice