If you double-feed these, just do them one right after the other. Don't wait, or it can mess up the digestion & cause a regurge. Some snakes will take one right after another, some you have to be creative (sly) to "chain-feed" them, & some won't. I hope yours will take them, but don't worry if not. The alternative is to feed each one solo, but I'd still suggest feeding no more than once a week. Snakes evolved eating variably-sized prey, so don't worry so much about slight underfeeding. Most snakes in captivity are over-fed & that's WORSE for them, health-wise.