I received a Chinese Elm (bonsai), from my son, for my birthday around May 12th. It did fine for about the first week or so, then it stared losing leaves. I had gotten busy, for a couple of day, and forgot to give it some water. Since then, I've tried to be more conscientious about watering it and not leaving it out in the heat, but it's still losing leaves. I've included then and now photos. I live in the Raleigh, NC area (eastern coast of the states).
(Not sure why the first photo posted twice).