Don't eat long spaghetti in public. It hangs off the brackets quite weirdly. No apples unless they're sliced first. No coke or similar. No toffee.
It'll be worth it in the end.
My son has just had his braces removed after two and a half years. All I can really say is to avoid anything really crunchy and chewy. If he wants an apple cut it into small slices. He was never told to brush his teeth four times a day. I asked him regularly if his brace felt OK and wasn't causing him any pain.
Get to know how it looks on his teeth so you can spot straight away if one of the wires has snapped. You will be surprised how quickly (within a matter of days) teeth move if the brace is not working correctly. Fortunately these days most kids don't have an issue with wearing braces and they are seen as cool, my son had blue spacers (may not be the correct term) on his braces. The one bind was having to go to the orthodontist every six weeks to have his brace checked and adjusted.
Good luck, all the discomfort (although he coped remarkably well with what little pain he had) is worth it in the end.
my neighbour's 3 children have them and it is the "in" thing - they love them and have been wearing them about 2 years now - think it will be time soon for them to come off. As a lipreader I never ever thought they had crooked teeth.
Mostly filling now Jenny but there's worse going around. :-)
My daughter still wears her retainer at night regularly to stop her teeth finding their own position. A wee bit like a lightweight boxer's gumshield but without the violence.
If he is iffy about wearing them, try and find someone who has had them as an example of how his teeth will look afterwards.
It was easy for us with youngest daughter - eldest daughter wore her braces (they were the detachable 'cats whiskers' ones in those days) and has perfect teeth, middle daughter didn't persevere and has OK, but not perfect teeth, yo youngest daughter followed her older sister's example, and has perfect teeth.