He just needs to admit it and prove to you he’s quitting. You literally have to change your daily routine around. Healthy food, vitamins, I listen to recovery stories on you tube. I’ve took up reading, and I do my best to learn new words. Just to keep me occupied. I deleted all social media. You can message dealers on there, plus seeing people getting pissed and out encourages you to do the same.
It’s hard but the rewards are worth it. But I’m only 4 week so I can’t say much lol