Any tips to stop/reduce a stutter?

Any tips to stop/reduce a stutter? I have social anxiety and I Big part of it is due to this. It was really bad today and I don’t know why, the only thing I can think of is I didn’t get a goodnight sleep. It’s so annoying dealing with this. I was at my churches small group and had to read some parts of a book. Yeah that was terrible. Any tips for this?