My youngest son is now 9 years old but, when he was you grandsons age i started to notice some of the same things and heard the same complaints. Turned out he had ADD
?ADHD combined! I had no idea this was possible. We kept an eye on it till he was almost 6 yrs old. It really started effecting his school time, homework, making friends and staying out of trouble! I felt so bad but, really they don't want to put them on med's to early. Try talking to his doctor about counseling first.