Is my BP underweight?

[Stewart_Reptiles]

She can handle an adult mouse or a rat pup at that size so you need to bump the food size.

You can feed a prey equal the girth size once every 5 to 7 days until your snake reaches 500 grams.

As for weight

It's not about weight it's about overall proportions.

There are too many factors that come into play in the weight of an animal, weight out of the egg which can vary from 40 to 90 grams, how fast the animal start eating some eat the next day after their first shed some may take 6 weeks, prey size out of the egg and there after, feeding frequency some people feed to little, some feed too much, skip meals and fast, and finally the animal itself.

What you want is an healthy animal with good proportion the res is really irrelevant.