I am so glad you kept exploring all avenues, Winding Road. Just wondered how your counselor assessed your dyslexia.
Learning disabilities (of which dyslexia is is just one) is very comorbid with ADHD. You can get a 504 accommodation plan from the office of disabilities on campus; in fact you can get this on the basis of your ADHD diagnosis, or on the learning disability one (which will require a full educational assessment). This way, you might be able to get extra time on tests, and other things that will make school easier. Please talk to your counselor about this!