I almost posted about this earlier today. My ds6 usually doesn't have too much trouble falling asleep when he first goes to bed, but he wakes up in the night and has a hard to falling back to sleep. Also, even when he seems to have gotten a good night's sleep, he's still tired the next day. His attention issues are severely exagerated on these days. Ds says his "brain works backwards; it's awake at night and asleep during the day." Not sure what to make of it, but I'd love to hear advice or experience of others.