You do not assist a healthy snake that knows how to eat, snakes are very efficient and can go a good while without eating however sometime the issue is not feeding itself but due to husbandry and some simple changes often temporary may help the animal resume feeding.
What is the animal's size (weight)?
How big is your enclosure?
What are your tems? WHat type of thermometer are you using? Where do you get your reading?
Are your hides tight like shells on a turtle's back?
If an animal is big enough to eat a small rat (your BP is not a baby anymore) but an animal that is at least 500 grams or over, if not you are using the wrong terminology when it comes to feeder so please get a weight on those feeders as well.
A 500 grams BP could go of feed for 6 months or longer.
The more details you will provide the better people will get an understanding of the situation and the better they will be able to tell you if it is something natural that need to be waited out or something that need to be fixed.