I started this tree from a soot that I bought. after a month it started losing its leaves and the ones remaining are turning brown. The tree is still alive but seems to be wilting and almost all the leaves are gone or brown. Do they go dormat after leaving out? It shows no sign of being infected by insects or any fungus. I was told it will come back and not to worry, but have never seen a tree do this. Anyone know what to do?