It depends on how old your snake is.
My girl is 5-6 years old, I feed her every 10 days. I believe some people feed theirs once a week, but I find that offering food on the 7th day, my BP just isn't interested. On the 9th or 10th day, she's ready for a meal.
If you do a forum search you should find lots and lots of threads related to feeding schedules![]()