Welcome! When you say baby mice, do you mean the tiny pinky ones with no fur? Or the fuzzy ones with their eyes closed?
If it's either of those then you are feeding too small. Have you weighed your snake in grams?
Most BPs can eat bigger than pinky or fuzzy mice as soon as they hatch. I'd try gradually upping the food size until you're using mice roughly the same width as the widest part of your snake. Then I'd recommend switching to rats as they provide more bang for the buck as far as food goes.
Reply With Quote