Yea we rotate (cycle) breed, giving them at least 4 weeks to regain weight and health. Whatever is refused at feeding is either gassed and frozen, or let to grow up. We have a a small handful of snakes eating FT, so it makes sense to freeze any leftovers.
If you were to not do cycle breeding like me, you could get by at far less females, but I like my numbers and my breeders will get to hang around for years.