When my pythons that are on rats go on a hungar strike as I call it, I have had a very high success rate with using a large mouse and rubbing the scent of the mouse onto the rats body I only feed FT and once warming the rat and mouse i will just rub the rat all over with the mouse it seems to at least in my balls trigger an enhanced feeding response. Not sure if this will help but I know it can be frustrating when your babies don't eat best of luck.