I have a friend in my brain injury support group who suffered a bad brain injury just before starting college. It took him 10 years to graduate and now has a masters in professional counseling with a focus in brain injury. His condition was much worse than your but he still has the symptoms that many of us live with.

I think you need to move forward educationally without setting such a locked in target. As you learn different disciplines, you will discover which ones you are good at and enjoy. You have plenty of time to sort these issues out. Just take classes that you can use toward building a resume. No basket weaving or other avocational classes unless the discipline has therapeutic value.

If you consider how many college grads finish without employable skills, you will see the need to be patient with your educational direction.

If you are in the US, see if you can take the ASVAB. It is the military aptitude test that finds your strengths and weaknesses. You could also take the Civil Service exam.