Mark,
Once the catheter is removed, you’ll feel much better, a lot more control; the one thing that you’ll probably realise is that things are a bit shorter initially, due to them cutting your urethra, only a millimetre or 2 for me, but for you, probably a couple of inches, so you‘ll be working with only 10” or so for now.
Good luck with the PSA test, they’ll never tell you it’s zero, apparently for legal reasons, but if it’s 0.001(or so), then you’ll be fine.
Enjoy your convalescence, remember, chocolate, alcohol, comfort food and plenty of TV(repeats of the 2008 GF are best); these are the keys to the successful recovery of a champion athlete