I understand--they look so sad with those collars on!!!
It's surprising how well pets can adapt to wearing the collars--usually within a day or two. If they aren't licking or pulling at the incision, you can possibly take the collar off.
When one of my boys was neutered, he hated the collar, so I took it off. When he went to lick the incision, I would show him the collar, and he would stop immediately! You might want to see if that works.
How is your little guy doing?