Ds has ASD, non verbal. he has always run and jumped but has recently started jumping all over the sofas, walking across the back of sofas ,jumping off the (high) arms etc. It doesn't matter how many times I ask him to get down he starts again within seconds. He would spend all day doing this if we let him. I've tried everything, distracting him with toys etc but nothing works. Ds2 age 2 is now copying this behaviour and it is driving me up the wall. Does anyone have any experience with this behaviour? Thanks.