I don’t know if it will help, but I had a problem where I wouldn’t breathe when I talked. I was trying not to stutter by talking as fast as possible and that meant not breathing, but it didn’t work and I would just run out of breath. I was told to visualize a wave as I talked. I needed to slow down and breathe at the top of the wave and talk at the bottom. It’s very awkward at first because you have to take some odd breaks, but it helps eventually because you’re forcing yourself to slow down and breathe.