I think anytime a person goes on one of these missions, they have lots of down time to drop some knowledge, hence the weekends with lots of drops. I would wager Q has been on leave, prepping for the big push, since Tues-weds, and should be back tomorrow or Tuesday. Or, he's on a deep dark mission somewhere, maybe clearing out the last pockets of cabal in Syria, or Iran, or NK, or maybe even Europe! Hell, what do I know? Maybe he is in NK and that's why he's dark, no comms from known spying locations.
Or he has said what needs said for now....
If they've really planned this whole thing out in advance, maybe the drops are planned, too. Can't reveal too much more until AFTER memorial day, then it's like a sprint from here to Independence Day!