I agree with the reply above. I’m an addict (Not cocaine), painkillers. I’ve started a taper plan with the help of my partner.
It’s your life, you cannot put it on hold, the same way as I don’t expect my partner to put hers on hold for me. You’ve given him chance after chance, unless he wants to change, he won’t. I’ve considered leaving my partner previously because I hated my anxiety/depression was having an effect on her.
I’d put the ball in his court, you’ve done your bit, as hard as it is you need let him sort himself out and you need to get on with enjoying your life, you only have one, why waste it?