That's all excellent news and everything crossed for a speedy recovery.
1. Keep him moving - walks around the house every 30 minutes is enough to prevent thrombosis and to assist the healing
2. Get some senokot to get a bowel movement within 72 hours but don't let him push or strain
3. Keep the catheter where it leaves the penis and at the connector 100% sterile with antiseptic on a pad - never touch with fingers.
4. Even when he is feeling better, do not lift or strain for at least 2 weeks - a friend did and is now back in for a hernia op.
5. Hopefully the shoulder pain will dissipate - it's a bugger so keep him on the 1000mg paracetemol until it goes
6. Wounds need redressing every other day - they might be slightly red to start but get a nurse if you see any puss or weeping. The stitches are most likely dissolvable.
The worst is now over and recovery is straightforward for the majority of us - it just takes time and he will feel so much better when the cathetar is removed and that isn't painful at all.
Good luck! xx
Steve