It has been done bro.. But i tell you its not worth taking the chance and losing a breeder. I know ur really stoked that your almost there. I didn't mean power feed. I mean instead of 1 or 2 mice.. offer 3 or even four if she will take it.. now if your doing rat pups go only two at a time.. power feeding is not good but you can double on the servings. I feed my 08 females 2 or 3 mice at one shot..some dont agree with it but they are very healthy. non over weight or anything i feed my 07 3 or 4 mice if she will take it. Just add another mouse to the tank and if she goes for it you good. if she doesn't after 5 minutes take it out and offer it two or three days later