I had some mild anxiety in the mornings after breakfast, so cut out my morning cup of coffee. It has helped somewhat. I don't feel the feeling well up in me like I used to. Admittedly, I was dx nearly a year when I did this.
A friend of mine had anxiety after dx, and went on beta blockers and that has worked a charm!
His explanation is that anxiety is a chemical imbalance. Coffee exacerbates the symptoms of it. The beta blockers fix it.
Reading some of the positive blogs around might also help. I have a few links to them on my website.
Sorry I could not be of more help. Good luck!