So I recently 'inherited' a 25 year old male ball python. He has never been offered anything but live rats-like adult big rats once (ish) a month. I read that he needs to once a week (either big nice or small rats, right?). The issue is I feel like he won't be interested in a f/t because he's never had them. Is there a way to switch him to f/t? It'd be more convenient for me and safer for him but I don't know how to go about it.