Leaving work for childcare is currently a valid reason to go on unemployment. They should try to work this out with one of their employers. They could each go

Leaving work for childcare is currently a valid reason to go on unemployment. They should try to work this out with one of their employers. They could each go down to 50% time and pay and be supplemented by unemployment currently. There is a lot of flexibility they aren't taking advantage of and then complaining about how hard it is.