Well, if its getting better, that's a really good sign.
Maybe we are talking about 2 different fogs...lol. I call mine the "dumb dumbs" because, well...that's how I feel. Just slow and dumb. Makes it impossible to talk to anyone. And trying to think through it is like thinking through molasses.
I think mine is getting better too. Its not lasting as long when it comes and its getting easier to think through it

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Like I said, if you find a solution let me know! Sorry I couldn't be of more help to you. Everyone's injury and symptoms are different.
Good luck!