Just a couple of suggestions. I had RP 3 years ago.

I second the notion of lubricating the catheter with gasoline where it enters the penis. Pull the penis back a little so the catheter is lubed where it goes in. Helps prevent irritation.

But book "Life after Prostatectomy; 10 weeks to continence" by Vanita Gagliani on Amazon. She is a very experienced pelvic floor PT and gives a very detailed instructions how you can become continent quickly. It's more than just kegels. I found it very helpful. She gives instructions to start pre op.

I found the Tena brand of pads the best. I agree with one poster about not buying too many until you see how you are progressing.

This is obvious but needs to be said. You will kinda get used to having the catheter in. unless you have the bag strapped to your thigh 24/7, be careful about getting up and walking without the bag. Ouch! It happened-once!