The lighting needs to be over the vanity. Either move the ligjts to be centered over the vanity; or move the vanity to be centered under the lights.

how much have you spent so far? I mean we are talking probably 200$ to an electrician...

that light fixture is not the right scale either, you need something more dainty, 2 lights.

What if you did more of a wall scone that would come down further without rewiring?

This is about the only other option, but people will always wonder why you just didnt move it

https://www.homedepot.com/p/Globe-Electric-Belmont-2-Light-Matte-Black-Swing-Arm-Wall-Sconce-51266/307924318#overlay