I know. Typical problem, I have a BP that isn't eating XD

[Homebody]

my main issue is my oldest girl. i love her dearly and she is just my big ol normal girl. at her heaviest she was 2,352 grams. that was back in november. she stopped eating which i didn't stress about because once she stopped eating for 8 months over the winter time a few years ago. well over the past few months she has slowly lost weight and is down to 1,972 grams. she still looks good but isn't super active right now. she ate on 2/18 (one of the mice) and has refused ever since. i know most say don't stress until they have lost 20% of their body weight, but could she just have been too chunky and is now slimming down and i don't need to stress that she is getting close to that 20% mark?

I'd take her to a vet. The length of the fast wouldn't concern me, but the weight loss would. That's a lot of weight to lose in a short period of time.