Does it matter?

[Stewart_Reptiles]

Maybe, maybe not. Pics would help. If this guy is as tiny as it sounds fuzzys maybe ok.
@ the OP, the rodent should be as big or slightly larger then the thickest part of the snake.

Fuzzys are in no way appropriate for a 125 grams animal, even an hatchling right out of the egg will eat something larger than a fuzzy they are actually started on hoppers.

To the OP at 125 grams the animal can eat an adult mouse.

The reasons that the animal refuses are likely husbandry related, the best thing to do at this point is to place the animal in something no larger than a 6 quarts tub, providing aspen for bedding and proper temps and humidity, and as equally important you need to limit your handling to a strict minimum until the animal is eating on a regular basis.

Hatchlings and juvies are usually voracious true picky eaters at that age are not the norm, look into your husbandry and feed adequately.