Our therapist has strongly suggested he attend SLAA meetings but he hasn't done that yet. She also suggested he block her number. He hasn't done that either.
It's been two months; don't you think you should have a plan by now?
Your husband is all over the map partly because YOU are. One of you needs to be the stable rudder in the marriage right now, and unfortunately it's not going to be him anytime soon.
I think the structure of a full no-contact/transparency plan would do you BOTH some good, and allow you to take things one step at a time. Unless and until he agrees to that, everything else is going to sit on hold unfortunately.