BP off feed for over a month now? Underweight .

She isn't eating any of the rats I try to give her. I am aware the hat it's normal for them to go off their schedule in the colder months but sheshe probably only eaten 4 or 5 since october/November. I'm not sure what a 3 1/2 year old bp should weigh but she looks underweight. Any tips or something to make me feel better about my baby ??

4 or 5 feedings over a 3-4 month period is in itself not a concern. you should post a picture for opinions on whether the snake is underweight. there is no proper weight range for a BP of a certain age, too much variability.

Yup, all of this^^. You can pick up a kitchen scale for $15 anywhere. I'd also triple check your temps, humidity, if it's in too big of an enclosure, your prey size and technique of offering . They can easily fast a couple months so getting those few meals in is great but if you're concerned about it being an unhealthy weight I'd look more into why it doesn't have the urge to eat.