Oh it was, she was the smallest ball python Ive ever had and I was still fairly new to keeping them.
As far as prey size goes, I just fed my newbie a very small mouse and it left a noticeable bulge in her abdomen. She was at 120g, so I think a medium adult will be too big for your guy. Maybe by "small/medium mice" the Breeder is actually referring to hopper/weaned mice? Either way, it might be in your best interest to try and switch him over to rats as soon as possible. It will be easier in the future to feed him one small rat vs trying to feed multiple adult mice. And from what I've read rats are more nutritious than mice so he should gain faster on them.
Sorry, on mobile and my autocorrect is stupid so I had to edit some errors![]()