Yes I have been waxing a different section each time I wash it. (usually weekly). I try to do the top, hood and trunk lid most often, as the sun beats down on them the most, followed by the front and back, and finally the sides. I also do the wheels about every 2 months to help keep the brake dust down. The sides get waxed least often because the paint gets the least abuse there.
If you wax a section or two every time you wash, you won't have to wax the whole thing every month or so. That way I don't stay up too late waxing.
