BR
Brekkie
They could easily have aired those shows on BBC2 from 9-11am, only losing the 10am hour of simulcast news (as the 9am hour is on BBC1). However I suspect they've been streamed more on the iPlayer than viewed on the red button, especially as each hour only has a 20 minute block relevant to each age group.

It gets tricky come September as legally children are back in school whether it's safe or not. I suspect the BBC's planning will be about being able to quickly reboot the series if needed rather than actually filming it.