Hi Mary ours are a little bit older than yours and they're fed every 3-4 days depending on appetite. If you feed them the morning you leave (or evening before) they shud be ok for the 4 days even up to a week. Only thing would be temperature - but the way Wgtn weather is going, it may not be a problem. If ur able to move the tank to the coolest part of the house and out of any direct light, that might keep it cool if it heats up. What about your baby axie and how long are you going to be away? We're going away for 2 weeks min. Don't know about the feeders but my sisters are sharing axie sitting duties during the period we're away.