Im going on vacation................?

for 3-4 days. i have a betta. im thinking of getting a small vacation block that floats. im not gonna leqve him w/out food 4 a few days cuz i know that bettas can go about a week without food but this one cant. he's like a sea pig! lol. seriously though, when he misses a meal, he gets severly stressed and turns white like a ghost...........so the vacation food that floats is a good idea right?