First off, I'm going to just say no to a band-aid fix. Charging systems on these bikes are very simple, so it's best to address the issue itself and not try to baby it along. You'll end up stranded that way.
The first tool you need is a multimeter. Even Harbor Freight gives them away every now and then. If you have one of them, you can check both the Regulator AND the Stator's functionality.
Stator: Generates AC power based on engine RPM, sends AC voltage to Regulator. Located behind the left side engine cover.
Regulator: Takes AC voltage from Stator and turns it into DC voltage that the bike uses. Stock location under the battery box.
Once you have a multi-meter, google/youtube the basics. How to read AC and DC voltages. How to measure resistance. An hour spent here is going to save you a ton at the shop, and keep you from getting stranded.
Good, you can use the multi-meter! Now let's test the components.
If you're lucky, it's just the regulator. Pretty quick and easy replacement, and you can relocate it to a better location so it doesn't get so hot, and will last longer.
If it's the stator, it is kind of a bear, but if you have a metric socket set and the help of a friend, it can be done in a day easily (and that's without doing the tuxedo mod, which is something for another day.. just figure out what's bad first!). You can't just try to ride it out
, it will fail completely, unexpectedly, if it's already starting to go out.