that's true i think but in the same respect if you fed the puppy the same amount that you would feed the adult it would be unhealthy and instead of being big and strong he would just be fat.
switching to rats should help--smulkin, i think, posted a pic not long ago of two snakes that were the same age, one that had been eating rats and one that had been eating mice. there was a big difference in their size. and you are in luck if it is a female that you have because they tend to get bigger anyhow.