He's trying to upset you. I'm not really understanding why they do this. My H went through this. It was when I stopped reacting the way he wanted or expected that the nonsense stopped. Not sure that will happen with you, but be sure, he's trying to get under your skin.
You can avoid any talk you want for as long as you want. He can't force you to talk.
Something here caught my eye, though, Wanda. "Not sure how my kids and YOU are getting food and to WORK and to school." This does not really sound like someone who is detaching all that well from you. I would expect him to say he was concerned about the kids and school, but he mentions YOU and WORK. Hmmmm....