OK so that's not actually possible, but it's what it feels like and I feel horribly guilty about it but can't see an alternative.
I'm self-employed and after a quiet autumn I've spent the last couple of months inundated by work, which is great, but the trouble is I don't have enough regular working hours in which to do it. Partly because of lockdown and no after-school clubs, which would give me a precious couple of hours after school each day. Also, I never normally work at home - too many distractions as my work requires intense focus and concentration, but the study space I usually use has been closed since March. The other thing is that my MIL is terminally ill, meaning DH has been living with her, 3 hours away, for much of the past couple of months, so he's not around to do stuff with DS (and also all the household chores etc now fall to me when previously we would share quite equally).
Now, DD (aged 12) possibly has Covid, so we are all quarantining at home until her test result comes back - and of course if it's positive, then we have another 8 days of quarantine to go. (Also, if it's positive, DH can't come home at all until the full 10 days are up.)
So - I am desperately trying to get work done, but DS has always been the kid who wants to play with others. He's never been good at occupying himself; he will read/do Lego, but otherwise he wants/needs interaction all the time, which I'm obviously happy to give under normal circumstances - he loves board games, for example, so we play a lot of those. And he loves going out on his bike, to the park, further afield, etc - but all of that is out right now. It's just far easier to let him watch TV/play on his tablet and he's doing so much of that right now (I'm talking maybe 5 hours a day) but I feel ridiculously guilty about it, to the point that it's affecting my focus on my work - so maybe I might as well just stop and play with him instead! But the work has to be done.
Add to this that DD has just started secondary school and we've had issues with her being unhappy and not settling, plus all of us coming to terms with the fact that MIL (who we all love dearly) won't be here for much longer, and I just don't have the energy/strength/willpower to do anything apart from the easiest option.
Sorry, this has turned into a ramble. I keep trying to tell myself that it's okay in the very short term, but then I worry that I'm turning him into a total screen addict from which there's no way back...