A slight regression in fluency is a natural part of pronunciation work and it happens to most of our students. It happens because we are building new connections in the brain, and we are exposed to many things we didn’t know about before. It’s a very natural part of the process, and it’s temporary!
You will start to see that as you continue working on your pronunciation and build new pronunciation habits, you’ll feel more confident and your fluency will improve. Keep in mind that this is temporary, trust the process!