I brought my hibiscus indoors at the end of summer/early fall and for a while it continued to bloom beautifully. After a bit, it became quite a bit more thin in the leaves and stopped blooming altogether. I noticed some yellow leaves but thought that might have been due to over watering. I tapered back the water and now the leaves feel crunchy and dry. What can I do? Is my plant in danger of dying? It is kept in a room with windows on three sides and an ambient temperature of about 68 degrees F.