In the meantime you may want to check out cerebrolysin as well as mushrooms (preferably psychedelic but lions mane is also good for the brain and is legal and easy to find). You should also try a ketogenic diet and exercise more to reduce inflammation as much as possible. These things together may not put you back at your previous baseline depending on how bad the damage is, but it’s likely the best you’ll be able to do pre singularity.