You can never do enough to keep some parents happy I'm afraid.
We are lucky in our school that the kids already had an iPad each (bought by parents) and they are used to doing work on it.
It is a mainly state funded school with a parental supplement to fund English speaking staff (we are not in the UK) so classes only have 20 kids and 2 staff.
Kids get 2 online lessons per day for 20 minutes which is more than enough for their attention span and the about 2 hours of work set which they submit on the ipad. They also have online German lessons and the teachers have set up book clubs and listen to the kids read online too.
But in our class, a couple of parents have been ranting and raving about it not being enough and that we are paying their wages bullshit.
It turns out that the one mother is WFH fulltime and her daughter wants to talk to her whilst she does her schoolwork.
Her expectation is that the school should do a full day of online live lessons so her kid is occupied and doesn't annoy her whilst she is trying to work.
She had our lovely teacher (who has been working 16 hour days to prepare and mark work) in tears with her self-centred poison.
People have never understood the workload of teachers and that has never been more obvious than now.