I had a prostatectomy in 2004 at age 59. I was completely incontinent for a month or so, then went to pads for 6 months after which I dried up.
I still have stress incontinence but only have to wear very thin pads. I use a larger pad when I exercise and ride my bike.
Go to an incontinence therapy specialist and learn how to properly do Kegals, then do them. Also talk to you doctor about using Viagra or Cialis before and after surgery along with a penis pump to avoid scar tissue. No one told me about this and I have ED problems and lost about an inch of length. Good luck