Be OPEN to him wanting to work on the M. "LISTEN" for signs that he might want that and GET CLARIFICATION if you THINK that might be the case.
IF he says he wants to work on the M, then encourage that behaviour in positive ways. In that case, you will be in piecing, and that is when you will KEEP WORKING ON YOURSELF... and... HE will START WORKING on his own stuff.
Until then, he will only change if he's motivated to do so and it may or may not happen due to your changes.
I agree.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!