hi, my son is 7 and has autism. Since going back to school he has developed a kind of twitch. It's really hard to explain but he kind of tips his head over to one shoulder, then the other, then kind of juts his chin out. He was only doing it once at any time but several times throughout the day, but now he will do the routine over and over. I think he does it most when tired or stressed but I can't be sure. He says he likes doing it when I asked initially but I'm not sure he is aware of doing it if I don't point it out. When he was younger he used to kind of verbally stim, e.g. He would hear a non word or a sound and repeat it over and over, but he's never physically stimmed so I'm not sure what to do. Is it stimming? And if so how do I approach it? I don't mind him stimming and understands it helps, but kids can be cruel and I didn't know if I should try and encourage something more discreet? Sorry for the long post and lots of questions, I'm not sure how to handle this. Thanks