The age and weight of your snake would be helpful, I would try to stick to a routine as close as possible if it's a hatchling that is just getting a few consecutive feedings under it's belt. If it's an adult or close to it, then probably want a prey item large enough that it will eat regularly every week or two. If I can't feed mine for a day or two, especially if I won't be home, I'll wait till I get back, going an extra couple days or a week isn't a big deal for an adult provided husbandry is controlled and they have water, and there won't be an issue with regurge, or poop dirtying up the cage without you around to take care of it.