If any of mine do that, I give them what they want. It's nearly impossible to over feed a BP as long as you do not feed prey that is too big or do not wait at least 3-4 days between feedings. You don't want to stress their system and cause regurge.

I usually have a few babies every year which are bottomless pits. Like a 500 gram 2010 I have now who isn't a year old yet. I offer him a weaned rat every 4-5 days. I offer a slightly smaller rodent to the ones I feed that often.

At some point, they will go off feed. Either for weeks or months. If you have the chance to fatten them up, go for it. They usually never eat that well forever. Take advantage of it.