Sorry to hear you are suffering, and for so long! I am sure my exercise has changed forever. I don't lift weights anymore - hurts the brain and neck. Climbing stairs is a challenge - not for the heart but for the head. Very weird and sad. I was extremely active in sports and loved getting my heart rate up! Squash, cycling, cross-country skiing, etc.

I did go to Buffalo for an assessment, if that is what you were being referred to (University of Buffalo Sports Clinic). They told me that I was at the stage where exercise would not make my concussion worse...and exercising at a sub-optimal level would be beneficial. You can find their research online and in medical journals. Dr. Leddy is one of the researchers.

I wonder if it would be useful for you? Not sure.

Did you injure your neck as well? (Sorry if you have already written that!).

Out of curiosity (because so many of us have had such bad experiences with some doctors who don't have a clue, or are patently wrong about concussion, how do you find your colleagues? Do you share your insights with them? It is the kind of injury that one cannot imagine until it happens. So hard to describe to others.
Hope you keep healing.