I purchased a tree from a local nursery here in Conn. The tree is potted and grew fast during the summer and while outside. Since I have brought in doors the tree has not blossom or had any new growth. And worst the leave have slowly fallen off, maybe 1-2 leaves a day. I have tried moving it to different areas in the house to see if it would stop the leaf drop. But the leaves continue to fall and now it only has a few leaves left. The leaves were not yellowing and seemed to be green and look healthy to me. Since moving indoors in early October, I have only used a 3-4-3 fertilizer and based on recommendations online slowed the watering down a lot. I usually wait till the top soil is pretty dry. I guess my question is the tree done for and no hope to make it till spring? Am I keeping it in the wrong spot in doors ?? Would air temps in the 60's be a problem.?? This is my first citrus and tree of any kind. So I am a rookie with this. Any advice would be greatly appreciated. I included a few pics if that may help.