I would wait. We had my son's dyslexia diagnosed at a children's hospital. The diagnostician had a rote list of accommodations and suggestions, but I would have loved to have expert opinion that related specifically to my son, which I think you will get at Eides. Since you do have a good sense about whether he has dyslexia, I would work on intervention strategies myself in the meantime. While most cases of dyslexia are caught later than 1st grade, the earlier the better for intervention. You can prevent him from ever being behind if you use intervention techniques now, which is something I wish I would have known to do.
