They will be fine. They will eat their poop because they smell the carbs and get energy from it. There is also fish feeding timers you could use, but they are difficult for me to use. I would throw in some plants to eat (when they get real hungry and not picky), some guppies (wont hurt at all, they sleep motionless on the tank floor and easy to eat at night), and some food in the basking area. Food in the basking area is cool, you will see that soon the turtle starts to grab the food out of water, drag it into the water and eat it. You'll be fine, no need for drastic measures. Im sure the little guy has nothing else to do and will eventually pick one. To be honesst, even with a large meal they are hungry. Whatever you do the turtle will be fine. Just make sure they have adequate water, clean, temp, lighting, etc. Just have fun on your vacation.
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Jeff M.
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1.2 tri-colored hogs
2.4 w.hogs
1.2 albino RES
2.4 spotted turtles
0.1 puppy
--->2.7 albino mice feeder breeding colony 