As Mark said, you don't need a baseline for the neuro-psych. Your test results will be compared to non-brain injured people of similar age and educational background.

As you're having issues with speech/language, you might want to request an examination with a Speech Language Pathologist. I found this helpful.

Like you, I struggled to articulate my symptoms. Do you have a friend or family member who could advocate for you at medical appointments?

"If you're not complaining, it can't be a problem," is not a good criteria for accessing a TBI patient. Any doctor following that protocol does not understand brain injury. Very often patients are oblivious to obvious deficits and difficulties. That's part of the injury. I'm glad that you're going to have a neuro-psych.