BCC should be thin and slow-grown. My guideline for feeding is:
- Up to 6 months old, weekly
- 6-12 months old, every 10-14 days
- Feed yearlings every 2 weeks
- Feed two year olds every 3 weeks
- Feed 3+ year olds every 4 weeks for females, and every 5-6 weeks for males.
Also once they get older their growth rate slows down so the whole "10-15% of body weight" guidelines goes out the window. My adults get a feeder that's about 3/4 of the girth of the snake, so the snake has little to no visible lump immediately after eating.