We were told that the burden mustn't rest solely on women, and husbands were expected to take their share. So if you were a woman trying to work and homeschool DC, they would be flexible, as long as there was some show that you and DH were, if at all possible, splitting it. Fathers were also given flexibility so they could do their share.
DH and I (professional careers) split it, though luckily we are both able to work from home a lot and fairly flexibly even in usual times. DH and I each tried to deliver 2 hours dedicated teaching time, and then the rest of the time DC left to fend for themselves as far as possible. When DH had to go into work (lab work) I had to take on more of the burden, especially of the non-teaching 'supervisory' time, which I had to combine with being on zoom calls etc, with 'mixed' results.
A routine is really important. We found writing the timetable on the wall (in large writing) helped children. A few times events meant we had to ditch the timetable, and DC's behaviour noticeably went to shit. Don't panic about trying to teach if the DC aren't amenable though. Some DC settle well, and others (especially younger ones, but often personality dependent) just won't. In which case, educational TV shows, Horrible Histories, Bitesize, online tools like Sir Linkalot and TTRockstars (my DC, 6 and 11, are addicted), reading once a day, cardboard and sellotape, colouring.