I inheredted a common variety healthy san from an elderly aunt. Now 2 years later the leaves are thin and not plush, limp, and almost soft. Several of the leaves are 2 ft tall and flop over. I get plenty of new shoots but some die quickly. The leaves are dark green with no yellow or splitting. I replotted recently, allow it to dry out completely before watering, and give it mod sun. Whats wrong?