I'm sorry you're going through this.
Your doctors should be able to tell you if you have an aggressive form of prostate cancer. When my dad had it, they were able to tell him that the form he had was aggressive. Whether your doctors have told you or not, they have typed your cancer. It's how they determine the course of treatment.
For some reference, he had a very aggressive form, and with treatment, he went maybe 5 or 6 years before it spread to the bone. He lived for 12 years after diagnosis (he also had Parkinson's, which complicated a lot, so it may not be the best frame of reference).
I wish you the best.
As auntiejessi said, your Dr’s would be the vest ppl to answer this Q. However, as a prostate cancer patient myself, I’m not sure anyone could tell you that for sure. I had surgery at a time when my OSA was 9.8, they told me it was a very aggressive type & despite the best my surgeon coujd do, my OSA never became undetectable afterward - a sign tge it had already spread to other areas. Mine is not curable, I hope to have 4-5 good years left, but this disease is orbly inevif the most confounding medically - you can have two guys, same age w/ same PSA level, same Gleason score, have the identical procedure, one is fine & never requires follow-up treatment, and the other is battling metastases & has his life cut short. But good luck to you - you may end up doing better than expected...