I am trying to be very understanding and supportive to my nephew has autism, but I need some advice as to handle a behavior that is becoming problematic for me. He calls me as many as 12 or more times a day to tell me things that frustrate him or worry him.. (If I don't answer, he calls my husband) And most of those calls are for the same complaint. How can I gently get his repetitive phone calls to stop, or at least become a reasonable number? I don't want him to feel rejected or upset. His mom passed away last year and I know change is hard for him.