Can you fix a broken odometer?

My odometer quit rolling and I was doing fine keeping up with it by how many times I filled up the tank but now I've lost track. lol It's only been broken for about 1500 to 2000 miles, I wanna see if I can fix it before my miles are more than I can keep up with. Any advice?

Its a 98, so its the old school roll odometer.
 
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