I definitely don’t know everything, but much of my reading for the last decade has been motivated by this campaign. It was often possible to anticipate what might be relevant a month or two in advance, and read up on it.
Congratulations on the campaign. I cannot imagine running something for that long.
You mentioned playing roughly once a month. How long (hours) were your typical sessions?
Averaging 12 sessions per campaign is not a bad length, especially if they are not focused on combat and level advancement the way most(?) D&D-styled campaigns seems to be.
When we were meeting face to face, roughly 4-5. This drifted down to about 3-4 when we were playing over videoconference.
(A thing that didn’t come up in the chat - one of the players had to move a couple of hundred miles away, and another became too ill to get to sessions in person, so I was doing various sorts of videoconferencing before it was cool.)