Yeah, you might not want to have any new hatches prior to going away. Just let them keep laying eggs. Train somebody close, real good, and make sure they have fed and done stuff with you there, so there is no problems. Do let them feed quite a few times so they have it right. Do several large water changes just prior and have water standing by in case you need to do a quick one. Feeding lightly is the best thing to do. Fish will live better on a little food than way too much and cloudy water-which will kill them. Have your lights on a timer(if you dont already).