F.H.
He's getting over 9 hours of sleep, so he's probably ok. My kid are 12 and 9 and they go to *bed* at 8pm. They don't have to go to sleep, but they have to stay in there and not come out. They play, read, draw, listen to music, etc. And they put themselves to sleep when they are tired. They also get up easily on their own. They have been doing this since they were about 4. And the best part of it is that's when OUR quiet time starts! Hubby and I can watch what we want on tv, do some chores, whatever. When we go to bed around 10:30, I check on them and make sure lights and radios are off and they are tucked in. Its really worked great for us. I think its good that your son is able to do this. So many kids go kicking and screaming to bed. I think he's ok doing this. Good luck!