Been dealing with gut issues on and off for a few years. got worse. saw a gi specialist telling me egd and colonoscopy is necessary. with my health anxiety, idk if i can sit with this calmly. procedure booked a month out. any tips on how to keep calm?

I recommend having cognitive behavioral therapy. Also look into meditation, muscle relaxation therapy and breathing exercises. All these modalities are excellent for relieving various types of anxiety. I'd ask your primary care physician to refer you or you could call the department of psychiatry at a university hospital near you and make some inquiries.