How big is the pot you have it in? How much are you watering? I ask because you have a glazed or porcelain pot. They don't do very well at losing excess water like plastic or clay. Could easily give you a rot issue. I only have some well established trees in pots like that. Also, did you get this as a cutting? Rooted cutting? Better to let young plants establish a strong root system before trying to up pot for more room. More room means more water held.
