Ds is 6. Also struggles with sitting down and doing the work.
We do a couple of hours a couple of times a week. It's enough to keep him in a learning mindset and so he doesn't forget what he's already learned.
Our school has been pretty shit tbh.
What we have done is learn other things. He's more independent now, can make breakfast for himself (toast or cereal), looks after the animals food and water, learned to ride his bike, runs 5k with me, has prepared and planted up our allotment and now maintaining and harvesting our crop, been riding his pony and learning basic care, helped me decorate, takes responsibility for keeping his room tidy, loads and unloads the dishwasher. We've also discussed and learned about politics, health, talked about BLM, discussed what religion is, internet safety. A million and 1 different subjects as a 6 year old never stops thinking and talking.
Our children are unique in this time at home they have had and I personally think so much time with parents and siblings (for the majority of children) can be beneficial. Dd at 6 was very different, still quite dependent, tired after school all week, wrung out at a weekend.
I will be glad for September to come but in the meantime am doing what we can curriculum wise but also learning so much more about everything else. We will keep plodding on with school work over the summer. Will probably ramp things up a bit in August when the weather is usually a bit hit and miss but for now we are enjoying the sunshine and warm weather being outside as much as possible.