Thinking of trying some Propranolol

Has anyone in withdrawal from Mirtezapine ever taken Propranolol for just a one time thing when you needed to take something. I’m not for taking these drugs but I have something coming up and my withdrawal has been making me so shaky. Propranolol is a beta blocker. I just don’t want to mess up my taper. Could you share your experience if you have and your thoughts.

Thank you

Jackie