My female BP is currently 2 ft. 10 in. the last time I measured her, which was about a week ago or so. I now feed her 1 small rat weekly every Thursday, which seems to fill her up. She's either 4 - 4 1/2 cm. across the thickest part of her body. She is 1 1/2 years old, so in 6 months how long do you think she will get? Of course, I will be upgrading meals as she grows.