Boa eating questions

[ChuckD8883]

Hi everyone. So I’ve had my little girl for just about 4 months now. She’s been doing great my only issue is the pet store I got her from gave me a few weaned rats for her. The only pet store within an hour from me is a petsmart and their large mice are too small and small rats are too big and I can not find weaned rats around anywhere. I’ve been feeding her 2 large mice (only about 20-25 grams each) every week and occasionally 3 if they were really small for about two months now. I drove about an hour and a half away to a pet store and picked up some small rats that were smaller than petsmarts but still seem a little big. I gave her one two days ago and she took it and swallowed it quickly and without problem. My only concern is she has quite a lump in her belly now and just wanna make sure I’m not over doing it. Any suggestions on what to feed her instead would be great. I haven’t weighed her in about a month and a half but last she weighed 277 grams I would bet she’s up over 300 easily now. The rat I gave her was probably around 60-70 grams. Any tips or help would be greatly appreciated! I’m not sure if it would be better to switch her back to 2 large mice until she gains some more weight and thickness and then go over to the rats or what. Thanks again!