One thing that hasn't been mentioned is your pre-stage routine. Visualization will help with your "skittishness". When you are the in the hole shooter, start your stage visualization process. The more precise and vivid your images the better. Be very specific with the draw, see/feel the gun come out of the holster cleanly. Finger off the trigger, thumb on safety, safety still engaged
until you are ready to place your first shot. See the first shot go exactly were you want it on the first target. If there's movement before the first shot, again be very precise in the steps before the shot. Repeat for every target and array for the entire stage. If you have already run the stage 5, 6, 10 or 15 times in your head. It will help calm the anxiety.
Pick an experienced squad if you can. Have a great time returning to the sport and good luck.