At some point, if you want to be more musical, you will have to forget about the technical aspects of your instrument and let yourself go.
When you have practiced a piece for hundreds if not thousands of hours, you should know it by now. Your body has developed the reflexes to play this piece so you don't need to think about fingerings; your fingers will do them without you thinking about it. Let it work by itself and the magic will happen.
Forget which notes you're playing, think of the melody and the emotions it brings in you instead. You'll see how much difference it makes!
I am associate principal horn of the Singapore Symphony Orchestra and the author of the progressive methods. I'm happy to share my experience as a horn player and teacher with you.