What you can do is some things like I'm doing... with my mice I don't have a need for the male when the females are definitely pregnant. So I feed off the male to one of my snakes. Less mouths to feed and I can get a breedable male in a heartbeat. The females like it better too. They each had 11 babies this time around and none were eaten. Soon the babies will be weaned and I'll put the moms in a cage separate from the babies, and put in a male with them after a week or so. Wait until they are definitely pregnant, then feed off the male again.

If you don't want to feed off your male and you don't want to keep a second cage going, then you may as well keep them together. I just try to think of it as if I was the animal... would I want to be pregnant non-stop Nope... so hopefully if there's a reincarnation stage of life, I will be treated as I've treated my animals.