Assuming the AGM letter is genuine then there is no better time to announce bad news. You just generate something else that interests people more.
Week 1 - tell the Bethel family some of them are toast and the construction work is on hold.
Week 2 - Just as the news is filtering down then make a big announcement about the meetings and magazines.
Week 3 - Watch as the JW global spin machine goes into meltdown about the chariot going supersonic and the end being so close. Cue up those memes for @jw_instagram_bollocks.
Week 4 - Check the bank account to make sure the outgoings are no where near the income.