Hello! My DS6 is being tested by the school district next Tuesday for the G/T program (a 30-45 minute test). The appointment is at 3:45 p.m. so he will be in K all day before the test. I'm worried he'll be too tired and/or hungry (which he usually is when I pick him up) to perform up to his full potential. Any advice (good snacks to eat before the test, possibly keep him home that day)? Thanks!