Hi hopeful. Unfortunately you cannot 'make' him do anything he is not prepared to do. Addiction is a slippery slope. All I can suggest is you do not put your life on hold- supporting him to the expense of your own. Support is one thing- but not moving on- that can turn into years. Have you gone to al-anon? Logic did not cut it for me- I knew what booze was doing to me, but I drank anyway. I knew what it was doing to my family- both deep down.
I stopped in the end because I died.
My empathy and support to you. PJ