As no-one else has yet answered you Epic, I had a similar problem when I was training as a gliding instructor, where every landing is a PFL. I could fly OK but could not talk and fly at the same time.
I was helped to get over this problem by an instructor making me chat throughout the flight. It didn't matter what I talked about, it could be commenting on the view, telling a joke or anything. It was amazing how quickly this helped me to introduce patter which itself helped me to fly more disciplined approaches.