How to stop freezing when I reach 'tone' moments?

I can read simple Thai script, but I have this massive mental block where my brain tries to map out every single tone rule in real-time, causing me to freeze mid-sentence. It’s like I’m running a computer program in my head instead of just speaking. Has anyone moved past this analytical trap? I really want to move toward intuitive speaking, but the fear of mispronouncing a tone and changing the word meaning is paralyzing me.