The wheel bearings are not designed to be removed and regreased.
There are some who work grease past the seals or even managed to drive the wheel bearings out and regrease them, but personally, I think you're more likely to screw up a perfectly good bearing. I monitor them for problems (which is easy - just get the wheel off the ground and check for play or gritty rotation) and when they go bad, replace them with new. Generally, I get 50K+ out of a streetbike wheel bearing. Replacing them is easy if you're ever done it before - it's cave man mechanics with hammers and punches but there are a few tricks which make it easier. But unless there is a problem, I'd ride on.
Changing the fork oil wouldn't be a bad idea about now. It's easy, although you do have to remove the forks and you want to be sure you understand how to get the right amount of oil back in - setting the level properly is a bit of an art.