My opinion is... not a problem.... She goes a little over 500 grams she'll still do ok on the weaned rat, the
chart is a guide not a definite all snakes are different.
I have a male BP that's at 515grams, still on weaned and he'll even refuse a meal every now and then, so it's still plenty for him
I also have a female BP that at 1255 grams and eats small rats, the next size up. I don't see her looking for more food, she eats weekly and is still growing and shedding like she should.
Maybe one of the higher ups will correct me, But I think you should be fine.