Can I still improve after having a brain injury for so long?

Yes you can improve. There is this magical word called “Neuroplasticity”; the brain was of restructured due to intrinsic and extrinsic stimuli such as exercise. Further recovery is always possible, and I have seen life-changing progress as a result of hard work in treatment. Read “Scott’s story” for his brain injury rehabilitation journey. Then book in to come to see him in real life.