Be careful on patching the little one.. dotn want to mess with his vision.
Awesome for him taking to it well with the characterization.
i would imagine a reward system of some sort might be good to make this a poisitive experience, maybe each day he doesnt complain about wearing it, he gets a star or something, and at the end of the time perioud he has to wear it (4-5-6 weeks or whatever) for ever star he gets $.50 towards a toy or something (pick a $ amount you are comfy with and divide it by days to get an amount) Doesn't even have to be something he's aware of, maybe in the end, showing him something to prove that sometimes life can be hard, but if you push thru it, good things can happen. Just an idea if it starts to become an issue.. I know to this day i can still remember the pain of taking it off at night and the feel of the air hitting my eyeball .. it was an odd sensation.
(im just offering up this idea, feel free to ignore it )