Hey there. I saw this as a private message in chat a while ago, don't know if you got my response, but anyway....
I too, have been having problems with brain fog, and they've only gotten worse with sobriety over 2 months. I'm trying to heed everyone else's advice here and give it more time. It feels like an eternity, like your brain won't ever get better, but I trust in the people that have been here before me
Some of those symptoms might be due to depression too. I got on an antidepressant around the 2 week mark, and it made a lot of difference in my energy levels. Still little difference in my cognitive function, but every little thing helps. And I agree with the brain activity suggestion: anything you can do to get those synapses firing will probably help. It can't hurt, at least. I've noticed since spending more time on chat rooms and message boards, I've found it easier to find things to say to people.