please help Evan find his poppop

my name is Jill and my love is Evan he is autistic. I am his grandmother. We found out around two yrs. With therapy and special classes he did great. His father died when he was six. Than his mother moved to Washington. The phone calls stop. My heart broke. I am so worried about Evan. He lost his father and the only real family he knew and loved. I don't know how he's doing. I don't want him to regress. Can anyone give me advice. So worried.his grandfather pop pop was his heart, he loved pop pop. He was doing so good. Don't ever give up on them, there is hope. They will come into your world. Just give time, it is well worth the wait. I love and miss my Evan :-(

Jill strpllo
vero bch., FL