All tuckered out

I'm sure that at least some of Mstr A's problems stem from the fact that he is too tired. This has been the worst week he's had at school for some time, and today was worse than ever. He refused to do any of his work for his class teacher, or in a one-to-one with the classroom assistant (which he usually likes) or even for the headmaster (who all 5 year olds are terrified of, surely?), and it follows a busy weekend away, where he gets less sleep than usual.

When I brought him home today, I insisted he did his schoolwork at home & set him to it, with a picture and narrative of his day, to be followed up by some maths, science & spanish. After a bit of a tussle, he did get on with his English, then had a break for supper. As soon as he finished supper he claimed he was too tired to do any maths (his favourite subject), so i offered a choice of either doing his work or going to bed for the night.

He chose to go to bed. At 5.15pm!

I went to check on him 30 mins later and he is fast asleep.

But I'm not sure what I can do. He is always in bed by 7pm, and sleeps through till 7am. He sometimes gets up about 6.30am, but not too often. That's 12 hours sleep a night. I could probably sqeeze in an extra 30 mins in the morning, but I don't think he'd take them during the summer. I can't really send him to bed any earlier & still pretend he's getting any kind of personal life. The school day runs from 8.45am-3.20/4pm There's no time for a nap around those times really (4-5pm? but would he still go to bed at 7 then?), and no opportunity at school!

I'll see how he is next week after a relaxing weekend, but I'm not sure there even is a solution:-(