Hi I'm after a bit of advice please. My son is 9 and awaiting a diagnosis possible high function autism, he does lose his temper easily and has anxiety issues. My daughter is 4 and they play upstairs alot together. He's been extra anxious tonight and said he would like time alone. He isn't with us all the time 50/50 care with ex. I'm really worried as he's acting really anxious. Could it be his age? Could it be the younger sibling? I'm at a loss!