Any advice on how to switch a BP to eating f/t

[Mowgliozzy]

My almost 2 month old babies refuse to eat f/t rats. I have 3 new babies, 2 of them ate live rat fuzzies but my feisty piebald that won’t stop attacking everyone doesn’t eat anything at all haha she just bites the rats the same way she bites me and let’s go. I’m going to try offering her rat pinkies tonight. But anyway my Mexican black and my other adult ball python never had an issue eating frozen. I’ve had them for almost 5 years and I’ve never once had them reject a meal. Everytime they don’t eat I find myself with a pet rat which im not too happy about. (I’m gunna give it to my friend who feeds live to offer to his snake) I’m not used to feeding live so I’d like to switch them over ASAP. Any tips on how to do that?