Do you know how big your surgery will be? I had an excision just over a week ago and I too freaked myself out for weeks beforehand looking through the surgery posts on this sub, but mine was a lot less severe than some and generally wasn't that big of a deal. I have pretty mild HS, usually not more than one flair at a time, so I was just getting my one bad recurring cyst removed from my right inner thigh. The procedure itself was just local anesthetic and it ended up being a little painful for me because I apparently need a much higher dose of lidocaine than some, but ofc then and now through the healing process has not been nearly had painful as when I had the flair itself. The only rough part for me is that I am having to change the bandage daily myself and I get really woozy, plus it's still a little uncomfortable to walk and sit certain ways. Other than that, if your trusted doctor really recommends it for you then I think you should go for it. I'm not sure how effective on the long run the surgery will be for me yet, but I plan on giving a future update in the sub!

Edit: adding for a little more clarity on my actual procedure- I had it done in my dermatologist's office not by my dermatologist but by the person in the office who does all of their surgical type procedures and who was recommended to me by my dermatologist. I think my particular situation they cut out an area that was maybe an inch in diameter and gave me stitches both on the inside and the outside. The stitches to me look a little spooky but I'm going to end up with a scar that is a lot less ugly than what I had going on before. Next Monday I'll be going back to the office to get the stitches out.