That's the 180. But you need to not make it about you.

Start very small. Only ask for him to do for the kids, not you. Do your kids do sports/activities? Does he attend? Maybe ask him to see a game or to take them to practice. Think of what he wasn't involved in. See what you can involve him in that has to do with the kids or around the house that doesn't look pursuing.

Honestly, his life post bomb drop doesn't sound any different than his life post BD. He's always had the freedom.