Once you have a fair amount of 4, think about Tulsa Pro, as 4 won't go away and it might stay dormant or might not.

My experience
https://connect.mayoclinic.org/discussion/tulsa-pro-initial-experience/
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Tulsa where to get
https://tulsaprocedure.com/find-a-tulsa-pro-center/
https://tulsaprocedure.com/
If wondering about Tulsa Pro from a science point of view, here is a basic Tulsa science overview article
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231661/
Conclusions:
“As an alternative to conventional treatments, TULSA is safe and effective for prostate tissue ablation in men with primary PCa. There is also evidence that TULSA delivers effective relief of urinary symptoms while treating PCa in a single, low-morbidity procedure. The likelihood of freedom from additional treatment or potency preservation is associated with the planned ablation fraction.”