It'll be worth the wait, hope his recovery is speedy!
My wee one Percy-Roo was neutered in the summer and now is living life with his wifepig.
Firstly bring him indoors if he isn't already, make sure there isnt any second or third levels in the cage or anything he can jump onto he'll need to recover and try not to get him over excited (hard i know!).
Change his bedding to newspaper and blankets/vetbed/fleece and keep the hay in a rack. For the first two weeks i was advised by my own vet to change the bedding daily to stop bugs and infections. Dont let him out for run or exercise for two weeks at least to give the wound time to heal.
Do you have any critical care? Or fiberplex (probiotics) to give alongside the antibiotics? This will be very helpful if he becomes ill or stops eating over the next few days, if you dont have any Critical Care mush nuggets in warm water and feed through a 1 ml syringe (your vet should have some to buy - usually 50p)
He'll also need extra vit C, so just give him a daily vitamin C supplement of 60g.
I'd also suggest alongside checking on him daily, weigh him daily too for the next six weeks this way you can keep an eye on his weight and make sure he isn't losing any.
You might also want to put a blankie over one half of his cage, i found this gave percy more security and somewhere warm and dark to hide.
Percy-Roo's op went fine, and he was healthy and normal five weeks after the op, but then one morning i woke up to find a strange lump on his left testicle a purple ring had formed and it did scare me. I took him to the vets and he had a rare allergic reaction to the internal glue stitches.

Just make sure you keep an eye on him months after the op too, as sometimes complications can occur months after the operation.
To end on a happier note, ten weeks after Percy-Roo op he was finally ready to meet that special pig and now, four months on hes a happy and healthy huspig.
If you need any more advice just post
Laura x