Your plant is going dormant as already mentioned, so just remove the dead leaves as it goes. No fertilizers, just keep it warm and drier. That means less to no watering as winter ensues.
Sometimes I may give it some water, but it is poured far away from the base of the plant, just around at the outer edge. We all have varying growing areas, it may go too cold on your side, especially at night, so keep it warm indoors..not too close to any cold window.
It will wake up towards mid Spring or later..just depends on your area's ambient conditions.
Towards Spring, you may want to check the soil, amend it, in case it needs more well draining soil, so that it is ready later for active growing when temps gradually warm up much more and light levels duration and intensity increases.
