Home educated kids learn the same content in about a third of the lesson time that kids in school do. Time has no real meaning. Lesson time serves the kids more socially than anything else.
When we ditched the first online program in the first lockdown, I bought him some workbooks and the deal was that he would work on 2 subjects per day - his choice but he had to vary them. We sat together and I never pushed him to do more than he wanted. He giggled through most of it and was still ahead of his general year group when they went back to school.
During the next lockdown it was much more strict and they had this awful lesson time on conference calls, and would be given work to do. He was in tears doing the maths, even though he normally loves maths and finds it really easy. He was just bored literally to tears.
The main thing my son loves about school is problem-solving in pairs and groups. Without that, the tasks he was given were soooo repetitive to the point of torture.
I could say a lot more about what I observed about how my son learns best during the lockdowns, but the point is, school's one size fits all policy is a pile of shite!