At one point my W basically said she was staying because she thought we needed to get to a point where we could co-parent. Honestly, I didn't care what her reasons were....it just gave me more time to work on me and for her to see that.
With that said, I think you're in a position to have some serious talks. You could do the LL questionnaire together, or something from Gottman's book. You might also considering just having an honest conversation and ask things like "what do you think working on it should look like?" His thoughts may not look like yours.
Go slow though. I know I'd be super excited if my W said that she'd like to try and it'd be easy to overload her very quickly. Honestly, at this point, we've done so much work on us, when our spouse says "go" we are chomping at the bit. Keep this in mind and don't overwhelm him.
