Worth asking the question for sure as I do recall the surgeon saying to me before I made my decision to opt for surgery that if my prostate was much larger they would have to shrink it first.
Based on what I know now and how things have progressed (really well in fact) I have to say I would have done nothing differently. I initially went on AS for 3 months after my first biopsy found cancer as it was low grading ( 2: Gleason 3+4=7), was in just a small part of the prostate and was contained within the capsule. After undergoing another PSA test some 3 months (September 2021) after my first diagnosis and the hospital finding that my PSA had increased from 5.74 in April to 6.01, the decision was then made for me to have another biopsy. That found that although the grading was exactly the same the cancer was throughout my prostate (but still contained within the capsule). I was advised to consider treatment and after deliberating for several weeks plumped for surgery. When the prostate was removed it was cut and spliced and although the Gleason score was still the same it was found that some of the cancer though still within the prostate was starting to bulge out. If I had left it much longer to have had treatment then it is very likely that the cancer would have spread and surgery would not have been such a viable option.
Returning to your question, with hindsight when I first got tested in 2018 when I was 60 ( I had no symptoms but had read that the likes of Michael Parkinson, Billy Connolly, Stephen Fry, Jools Holland, Rod Stewart, Ben Stiller had all been diagnosed with prostate cancer and were urging men to get tested) and it was found that my PSA was 3.58 I should not have left it another 3 years before getting tested again. Leaving it as I did could have resulted in a different outcome to the one I have now.
Ivan