So my female bp is about 2 feet and still on medium mice. She's eating about two every week so I want to bump her up to rats, but I've heard that ball pythons should be gradually transferred to a new food type or they'll just refuse it. So would it be best to get large mice then to a proper sized rat or should I do large mice then small rats then a more appropriate sized rat? Or does it even matter and I'm just over-thinking it? She's never really just flat refused a meal except for a two month-ish winter fast this past winter and then a month fast in the spring when the temperatures plummeted again. She didn't even refuse a meal a few days after a cross country move and a move to new tanks upon arriving.