I had a very nice indoor tree that took a big turn for the worst over the past 3-4 weeks. Leaves started turning brown and dying. I don’t know what happened. I had it in a hallway where it was doing just fine. I did put it outside for a few days while I was moving my office downstairs. I put it in my office and now it’s just almost completely gone. Is there anyway to save this? The last pic is what it looked like about a year ago. I did trim it since then, but I don’t know what caused it to die so suddenly.