IMO I would convert your snakes to rats as soon as possible. They have much more nutrients than a little mouse. I fed all my babies that I have aquired rats since thier first meal. I've seen as much as 80-100 grams of growth a month. I also feed every 5 days one to two crawlers. I will continue to do this until they can take a small rat, then I will probably back down to a small rat every 7 days. Some might call my methods power feeding or over feeding, but, it works for me.