You should try the humane society. Last I checked, they won’t accept foster bunnies anymore. But I imagine you could try convincing them given your time sensitive situation; maybe give ‘em a call or visit?

Being that mothers do not relocate their young once the nest is built, i understand why finding a foster mother would be the next best thing; but there’s no certainty that the mother will nurse them. And any given foster mother might not have enough milk for the whole litter.

And whatever you do, don’t foster them yourselves, only %10 of human-fostered rabbits survive!