Don’t worry about getting H involved. Most MLCer run, that includes from the kids - and that is usually for the best.
Totally second this. Immediately after BD, my H was still doing everything he could do to behave like a normal loving parent. He was showing up, taking the kids to their activities, cooking for them etc....
Slowly but surely that started to crumble. And now we barely see him.
But it has been WAY better this way. The kids no longer have to endure his random anger bouts. There is 99% less tension in the family when H is gone.