Congrats Fugo, your professor's kinda famous, inasmuch as scientists are famous! Weird that he sort of stopped taking on high-profile projects in his late 20s and came back to focus entirely on teaching, but at least you're the one benefiting from that choice.

His response to the check-in in September would have been exasperated but perfectly fine - just very annoyed at having missed the start of the semester. October...well, he's grateful for the concern and he's got people to lean on. He does seem to be gradually bouncing back over the past couple months, anyway.