When I mean feeding multiple food items, I meant feeding the appropriately sized prey (or too large of prey) in multiples, which is a lot to digest. Sometimes too, if the snake decides he wants to constrict it for some reason, it can upset the previously swallowed prey.
Sorry for the confusion.
If you only have the availability of mice, many people feed bps their whole life on multiple mice. Just make sure not to over/underfeed! :]