I think you may have pushed it a bit in your reply. I was hoping you'd simply tell him that Wednesday was fine and leave it at that. Can you look at your email and see how you "over did it"? If you can't, then you have some work to do at detaching.....but if you "can" see, then that is good b/c we all learn by our mistakes. Has he been getting the kids on Wednesdays? If not, then maybe he is warming up, but please be careful and don't "talk" so much.....lol. We women tend to do that when we are trying too hard.
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!