The advice varies. Some people say a week, some people say 2 weeks. Some people go by feedings. I wait until they've eaten once or twice before I start handling them outside of cage cleaning. It sounds like your snake won't be shipped so it may settle in faster, but they are all different. I've had a BP eat for me the day it arrived after being shipped half way across the US. Then I've had the BP that took 3 weeks before she would start eating.