I was born with a congenital neuro defect. Treatment is basically ongoing surgery ad nauseum.
Last year I spent 10 weeks with a neuropsychologist. They gave me lots of brain exercises (lots of free apps available on line) to improve my cognition and memory. They told me that the brain is a ‘use it or lose it’ organ.
My physical neuro issues are completely different to my mental health issues.
For your piece of mind, consider seeing a neurologist.