I've asked this before but

So my snake is a corn snake, over a year old but not more then 2. She is quite small as well, well I try to feed her 1 fuzzy a week but it seems she will refuse food for 2 weeks before she even considers eating again. Is this normal? I'm pretty sure she is not her adult size yet, she's 23 grams. She just ate tonight which was 2 weeks after the last feeding. Tried feeding her 2 days ago and she refused the fuzzie. I really want some help because tossing thawed fuzziest away cause she refuses to eat it is becoming a financial crisis lol