I bought this plant about 7 weeks ago. Repotted it in a generic soil. I've watered it maybe 4 times. It is in the room with a west and a south facing window. The leaves are turning brown. I brought it outside today to take out of pot and evaluate roots. The roots look great. They are neither wet or dry. Any advice on what this might be happening. I'm wondering if the room is a really dry room. Thanks for any help.