You are feeding to much and sooner or later it will backfire she will go into fast and than you will complain as to why your BP as been fasting for 6 months.
YOU need to feed APPROPRIATELY the 15% rules which should not be applied to an animal bigger than 250 grams.
You want to grow your animal nice and slow at a steady pace, over feeding and fatty liver disease are a reality so it is time for you to scale back down and take in consideration that as you BP get older it's metabolism is changing and becomes slower.