He was like a robot baby. He was silent and passive, late to smile, late to laugh, didn't babble at all, first words were at 3 and they were ball, wheels, and bees. I used to joke wonderingly that I could dump him in the middle of the floor with some toys and go to work, and he would have still been there when I got back.
I used to sit on the floor with him to teach him to play with little cars, and he would get up and leave the room to repeatedly flush the toilet or squirt toothpaste into the sink. (Hv said "He's doing it for attention"!!!)
His eye contact has never been truly awful, and he is searingly bright so excelled at school when he started. I too went behind the school's back for a referral to CAAMHS, because they lost him on a trip to the library. He wandered off and simply never returned (he did this all the time and I had repeatedly warned them).
I have a photo of him, aged 5 or 6, sitting on the playhouse with a proud grin on his face. He had filled in all the 'tiles' on the roof with chalked sums.
Now at 15 he talks about Yu Gi Oh, robotics engineering, maths, and very little else. He's applied for a sixth form based on the very formal dress code. He's a complete nerd and I love him so much.