I will start by saying that my older child is on the waiting list for ASD and ADHD assessments. These were both prompted by school. I was completely blindsided when they called me in when she was in year one to say they were considering referring for ADHD (with my agreement) when she was 7 and did I notice any traits of autism. I work in mental health but was completely blind to her little quirks and temperament. I thought it was anxiety and just kids being hyper!
My son is in year 2 and there have been no concerns from school. His sleep is awful though, he will not go to sleep. Not alone. Not with me. Not anywhere. He is very tired in the day.
His brain just doesn't switch off. Talking or moving constantly. I've had to enforce a no talking rule, because he just keeps speaking to me, or himself if he's alone. If I do this it just switches to fidgeting. Constant fidgeting.
Even on holiday if we've walked 30,000 steps, or played on the beach all day, he will stay awake until past 11. There's been times I've fallen asleep and woken at 1am to find him still awake.
But school don't see anything. He does have special interests, well apart from what he watches on YouTube. He will sometimes get angry if I enforce boundaries around his screen time. Or tell him he needs to watch 'proper programmes with a storyline'. He is fine at losing games and busy places, changes to routine. Has some eccentricities about clothing texture and warmth. We have to warm up clothes with a hairdryer.
I'm not asking you to diagnose my child. But is the sleep alone worth exploring? I do often wonder about him being afraid of sleeping. He did have some trauma this year, but this predates this.