I have three boys who are a little over 8 weeks old. Right now, I feed them the adult formula of Oxbow Regal Rat. I looked into getting them the young rat and mouse formula of Oxbow's, but wasn't too impressed with the ingredients (corn, etc.) Since baby rats need more protein than adults, I've been supplementing their diet with a bit of scrambled egg and nuts/seeds such as pumpkin seeds. Any suggestions? Or should I change them to something like Harlan until they are 6 months? Thank you!