I couldn't remember much in early sobriety and my brain did not seem to function well. My daughter talks now about how she was worried she would never get her mom back, that I might have done too much damage to myself. 15 months in and we no longer worry. I did take a lot of notes and even had an app on my phone call post it so I could remember everything.
It's pretty cool now, I don't have to write everything down and the fog has continued to lift.