^ Good questions. Also, are you moving them to separate enclosures to feed? What size rodent are you feeding and what do the snakes weigh? Do you have multiple snug hides in the cages?
Sorry OP, just reread and realized they are breeder-sized. Do you know if they were eating when you got them? I have quite a few that are off feed just due to the time of the year. Weigh them with a digital gram scale so you can track whether they begin to lose any.