Welcome Back!
I know how you feel. I prepare for a performance quite well by going to my studio before hand to the 'up the anti'.
I get very delicate as the date approaches too, and difficult to live with.
I have a method where I allow myself to become wrought with nervous anxiety a couple of days before the appearance, so most of the tension is gone on the actual day. I kind of use up all the nerves the day before. Still, it's pretty daunting to strut out on stage all by myself on the night.
Great to see you back!