Meetings helped me too, so I too would encourage you to try a few. I'm glad you are recognizing that your energy is wasted spent worrying about him. Now is the time to recharge so you will be strong when he next needs to manipulate you to get what he wants.
One thought that really helped me when I kept wanting to rescue, was the realization that the more I did so, the more I prolonged drug use since I kept filling in the holes so my daughter could not reach a bottom. Knowing that my action could actually make her sicker helped me to detach and to finally say no. Hugs