I would not advise this practice. Trying to shrink the prostate with hormone therapy sometimes causes scarring around the prostate that makes it difficult to perform a nice clean nerve sparing operation. Also some prostate cancer cells are resistant to hormone therapy and if they are present, they could continue to grow and perhaps spread during the six months. In my opinion, one should be wary of using drugs that are not approved for prostate cancer treatment unless the reason is very compelling.