...tell the sheeple that "Jehovah's earthly organization" is financially facing critical times, hard to deal with, which could threaten its survival and that it urgently requires as much money as the minions can send.
Like every other business in the world, the cult needs a constant source of cash to exist. So with meetings, assemblies, and probably conventions being cancelled, the cash-cow is rapidly looking very precarious.
I reckon the financial brains in the WTBTS will have devised a financial survival plan - based on the situation continuing/worsening. :) The sheep have all been fleeced - time to skin them!