Most definitely LEAVE THE MALE IN THE COLONY! Do not remove the male - just leave him in there, and let them do their thing. Take the feeders out as you need them. Once the babies are 3 weeks old, remove them from the cage - either feed them to something, euthanize them and put them in the freezer for future feeding, set them up in a different cage, or sell them/give them away. The three females will continue to produce new litters for you, so you will have a steady supply of feeders.