Im sorry I know nothing about breeding but can I ask a question and make a suggestion?
Does the sire have to be seperated completley from the mother and pups or just far enough to give her some space?
How about a play pen or a saftey gate? this way Maggie and Oscar could still see each other but Maggie and the pups would have some space?
I dont know if this would work just a suggestion

congratulations on healthy pups.