tbf, I don't think he has another job, so if he's only creating 3 comics a week and writing his books, there is def enough time as a side project to put out a fun annual comic that requires a bit of work, obviously it would need to be planned well in advance, which it appears this was not.
I've always assumed he has a large backlog of comics, and a script that pushes them out on schedule.
He can always push new comics into the queue based on current events or fresh ideas, but at other times he can probably go for weeks without needing to draw new comics.
Right. Maybe the workload is manageable, especially for someone with the amount of experience he has, nevertheless the breadth of the stuff he does is what amazes me the most.
Just programming one of those interactive comics must be quite a challenge, to then add the story, the wittiness, depth, etc is what blows me away.