It might be done but,
It really hasn't been working very long at 13 days or so? So you can give it a little time.
Has the temperature changed? If it is cooler, perhaps warming it up for a day or two might finish it off. Or if you aren't adjusting the hydrometer reading, perhaps it isn't stable.
If you are in a hurry to finish and bottle and your reading is stable you can bottle, but I bet your beer will taste better if you wait another week or so.
Did you taste the beer in your hydrometer tube? How was it? It gives a good idea how your beer will taste if you bottle it.