Just as I was replying to your post, I happened to look at the time & I was almost an hr late in taking S(4) to school!! Yikes!
What catch's me is this sentence; "Do we have a family physician". As in, WE & Family in the same sentence! This is a change in tone from him.
Along w/the tone & manner in the rest of the convo, it's a step towards something more positive.
Was it b/c he sees that you're not only busy, but making $$$ & taking the pressure off him? We don't know. I think it was good for him to see that tho.
At least in my case, when my H has come closer at all, it's immed. followed by a distancing behavior. Now that I know that & expect it, it's easier to let go & not take personally. I don't have to tell you that tho, I think you're the one that clued me in after all.