I have a very severe underbite which makes it tough for me to pronounce Rs correctly (really fun when your name is Ryan—I literally can't pronounce my own name

I have a very severe underbite which makes it tough for me to pronounce Rs correctly (really fun when your name is Ryan—I literally can't pronounce my own name correctly without concentrating). I've found the only thing I can do is slow my speech down a lot. I have a tendency to talk way too fast and I end up tripping over my words—it feels like I'm falling forwards. I panic and then try to talk even faster just to get to the end of my thought. When I slow down and speak very deliberately, I've found I can do quite well and even enjoy public speaking. I just have to avoid that mid-sentence anxiety attack.