Question On Bringing Juvenile Up to "Ideal" Weight

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We received my son's female BP in May and the breeder (XYZ Reptiles) said she was hatched Aug 21. When she arrived she was only around 150g and her weight was a concern given her stated age. I have been feeding her every 7 days around 10-15% of her weight (live mice and FT rats when she will take them). She is now approximately 1 year old but only 363g (as of this week).

My question is: some internet info recommends to continue feeding at this level until the BP reaches average weight (500g or so) but she is beginning to show signs of being slightly overweight. For instance, her tail area has a slight bulge rather than a taper and she has very slight skin rolls when curved. She still shows her spine but with less of a pronounced "V".

Should I keep feeding her on the same schedule until she gets closer to optimal weight or extend her feeding to every 10 days or so? Is she just a small snake for the breed?

I think the best way to judge whether your snake is a healthy weight is by its body condition. A snake with fat rolls and a bulge before its cloaca is overweight. You should use smaller feeders or feed less often.