Just skip a meal. Honestly, if you're running late and don't trust anyone else to feed, then missing a meal won't hurt. They'll be fine. If it happens a lot, or you want to get them down to one meal a day, just change meal portions to compensate. There are raw feeders out there that offer gorge meals and don't feed but a couple of times per week and sometimes less then that. I'm not that hardcore. But you can see how it's OK to miss a meal if the need should arise.
"i can explain it to you, but i can't understand it for you."