sick elkhorn plant with brown spotting on leaves
I have a plant, it looks like it is some kind of elkhorn variety. I've had it only about 1 month, as a gift from a friend. I'm being careful not to water it too much, just soaking it once a week.
It is currently winter, and it is positioned so it gets all day sun, but the sun is not too much.
I can feel from the base of the basket that the bottom of the basket is damp, so I think it's holding the water well enough.
I have heard that they need two things - shady and not to be over-watered.
The leaves have began having brown irregularly shaped spots.
When I water it, the spores on the back of the leaves have washed off in parts. Where the spots are now appearing is most commonly on the opposite side of where the spores have been washed off, but it may be a coincidence.
I would appreciate any recommendations on what I should do to help the plant get better.