"You're getting cognitive aren't you?" And he goes, "Yeah. You don't like it, do you?" -- that's playing too! The "bantering" is really good, fun playing.

That does sound like a good session! I'm glad he was able to reassure you about the lithium, when are you going to start? I always feel good doing the worst case scenario thing; makes me feel like the "worst" isn't very, or at least isn't something I can't handle.