You have had some good info her, OP. I'll add to it. DSis, EYFS, is already working on home packs and online work. Her HT has planned for staff video conferences on Mon/Wed/Fri of each week and has warned that they should think about this being how they will work until the end of the school year.
That is home packs, printed, collated, delivered.
Online work designed, built and placed were appropriate
Parent support considered, designed, placed and/or delivered
New intake procedures reinvented, beginning of the new school year redesigned
SATS reconsidered, awating government advice, but time having to be set aside to redesign the schedule
And a whole host of other stuff.
Home Ed organisations are all over facebook with free resources, offers of help
Freelance teachers, as above, also offering additional help. I may come out of retirement myself.
YOU have no idea, but HTs and teachers the country over DO an are gearing up for it.
Educators are working hard to get this sorted. Stop panicking It will get done.