I also enjoy the feeling of a pad between my legs, sometimes even 'doubling up', thus forcing me to walk slightly bow-legged. I love the feeling of a very large pad or pads rubbing against and tickling my manhood as well as my inner thighs anytime I move. Very 'stimulating', if you get my drift.
Nice beginning, possibly set up for an unseen damaged nerve or something that will now require protection to be worn, personally I like 24/7 protection, but that’s just my preference. He might need help getting them on and changed, as he is a bit too weak at this stage.
As you as for possible suggestions going forward, I can see a possible opening for some gentle AB care whilst recovering, if I were to steer its direction I would keep a gentle AB background, while also building back to health fitness and sport, I’m personally not moved by punishment and humiliation, though I am very aware many are and it gives a good pivot for emotion, which a story needs.
I usually wear a t-shirt with either an "overnight" pull-up or a tape-on diaper. If I'm not having to go anywhere in the morning I wear a Masterpiece or Megamax that I can keep on wetting and maybe poo-pooing after I get up.