Here is what I did in this exact situation: I told my son when he goes into the 6th grade, I will allow him to have others spend the night, and allow him to spend the night only at the houses of parents I know pretty well. I feel by that age, a child has a few set friend they hang around...at age 8, everyone is their friend. I would also let the other children and parents know that this was our rule. I then prepared myself and took every opportunity to educated him on things like inappropriate touching, his body changing, what to say when someone touches him in private spots. We also talked about behavior and listening to mom even when I'm not around. How following what he knows is wrong can lead into a lot of trouble. I shared stories on the news, PG version, and we talked about the situations and dangers of it.I know all this seems extreme, but it really opened a door for us and he would come to me with things to talk about. At the end of the school year, 5th grade this year, I allowed him to have a few sleep overs. It was a HUGE deal with him and his friends! Now that it is summer, he has had a few sleep overs, and even lost one due to punishment.
We have a sleep problem too. If your son takes meds for his ADHD, you might want to talk to him about his afternoon dosage/medication. He also needs to know the sleeplessness of it. Sleeplessness causes ADHD symptoms. Here is what I was told to do by my doctor, and it does work. My son and I take a natural sleep aid called Melatonin 3mg one hour before bed. Also before bedtime, give him a dairy snack like yogurt or icecream, it'll make him sleepy.It does work, but consult your doctor first.
Here are a few things extra that I do: Be aware of what is in your foods and read the lable. Stay off foods/candy/drinks with dyes in it. Red dye is a stimulant. Try to have no caffine at all..limit chocolate, soda, drinks,tea, and candy. Limit sugar intake. It's best to eat the fruit for the natural sugar than drink the juice with added sugar. I do all this, and my 4 boys have very good eating habits.
I hope this info is helpful...
Many blessings!
M.