Maybe this is your sign to keep doing what you are doing. Stay the course. Take it one day at a time. You have been doing an INCREDIBLE job of learning to reduce your addiction to him (from the outside looking in, it has been remarkable to watch...kudos to you!).
By letting him take the kids to school, you are doing a little for them and by not worrying about the next step, you are doing a lot for yourself.
Good luck and keep on keeping on...you are doing so well.
Jenny