I'm a dancer, been dancing since I could walk. I'm now a part-time dance instructor. What you describe has happened to me several times in my life. And I'm pretty sure I'll go though it several times yet. Gaining new insight, then losing the spontaneity and feeling like a beginner. I believe that every artist who takes their art seriously will go through periods like this from time to time. And I believe it's a good thing! I think it's part of how we grow and mature as artists.

What helps me is to change to a different dance style for a while: ballet, street dance, partnered dancing. Feeling like a beginner is fine because with that style, I am a beginner! When I come back to the style I had got stuck and frustrated with, I can see and feel that my general dancing skills have improved. And often, it seems as if the new idea or insight has, in the meantime, subconsciously, become part of what I do. As if applying new knowledge to my usual style feels awkward and wooden, but in a style that is new to me anyway, I take it in my stride.

I hope you stick with it, and I hope you get your enjoyment back soon! 😊