It's a radical idea, but maybe, just maybe, you could have a conversation with parents....
My DD is fine with blended learning. In fact, she's doing better with it than she does in school, because the method of working is almost exactly what's been recommended as adjustments for her Dyslexia, and she's not allowed most of it in class yet.
I can support her fine. There's no issue with our current arrangement where she comes into my office and works in a spare room next to mine continuing.
Keep setting and marking the work and she can do this till July, no bother. Her biggest issue is social contacts, but she doesn't get that in school as none of her friends are in her class.
Now, I full know that we're very lucky, but - we can't be alone. There have to be other families, particularly in the Year5-6-7-8-9 middle years, where blended learning isn't a disaster and it is sustainable without trashing the kids education.
Surely, if lower numbers in school are better, this is the place to start? How many of us can voluntarily stay as we are and not have it affect the children? There's a real message of 'its hard, and hopeless, and crap' - but that's not universally the case. It may not be a lot, but it will be some - why not find out?