They should be fine.

I was at an expo earlier this week and they didn't have any female weaners. (I wanted to raise as breeders.) So I took 6 female pups (2 weeks old) they are eating and drinking on their own just fine. All I had to do for the first 3 days was water down the rodent block. Might be a bit smaller/slower than if they stayed with their mother, but they were fine on their own in terms of survival.