If you can take off your door panels, it is fairly easy to window closer to the door.
You will need a 4mm allen wrench and a 12mm wrench. You will loosen the bottom nuts and screws (2 per window rail = 4 bolts and nuts total) that holds the front and rear glass guides.
It helps to scribe a line on the nut and screw to give you a reference point.
First, loosen the nuts. Do not remove.
Hold the nut with the 12mm wrench and use the 4mm allen wrench to turn.
To move the top of the glass OUT, turn the 4mm allen wrench CLOCKWISE.
To move the top of the glass IN, turn the 4mm allen wrench COUNTER-CLOCKWISE.
Do this evenly on the front and rear bolts.
Tighten the nuts when finished.
Check by using a hose and water to see if you get a tight fit.