So, is he hoping the PT will help with your dizziness ?

And, it not, then the vision therapy may help the dizziness ?

btw, I have had poor convergence for decades. It is noticed every time I need to get checked for new glasses. The only effect it has is to reduce my depth perception accuracy.

I wonder how he sees a connection between either and your dizziness.

"regarding checking for symptoms, my concussion got worse the day when I did not care about an incipient dizziness while running."
What do you mean by your concussion got worse ?
Could it be that your dizziness was from the pound with each stride rather than the exercise ? I suggest that it was.

Regarding B-12, you don't need a high dose. But something more than is common in a B complex is usually helpful. Methyl is better than the cyano version that is in most B complexes. Plus, the D-3, calcium, anti-oxidants and such are all helpful.

Please keep in mind that many concussion specialists are just sport medicine doctors, usually orthopedists, who have taken a weekend seminar about concussions given by one of the computerized neuro-cognitive test (CNCT) companies like ImPACT. Their focus is return to play and signing off athletes so they can return to play. Because schools require such sign offs, they develop multi-discipline clinics and are able to collect fees before they sign off on these athletes.

While waiting for the athlete to pass the ImPACT or other CNCT, they are able to bill for lots of care. I'm not sold that most athletes need most of the treatments. There is a saying, give a man a hammer, everything looks like a nail. Give a doctor responsibility to sign off and every athlete/patient becomes an income source.

Yes, there are neck injuries with concussions. Studies say as high as 80%. But, they are more likely to cause headaches and the roller coaster of other symptoms. Chronic dizziness may be not related to the neck injury.

Dizziness is a key symptom that prevents a return to play sign-off. So, he keeps trying to treat.

But, as I said, what are you doing to help your neck and jaw heal ? Jaw problems can be due to jaw clenching or grinding, often during sleep. Do you wake up with a sore jaw ? Jaw clenching can be cause by a concussion and some meds.