Bought this tree 2 years ago. I think it was newly 'sculpted' by someone with no ideas. It did well last season, the leaves came in again and grew on most branches. Last fall they dropped and I put it out in the garage, pruned off dead branches, but not all of them, in Nov; watered it throughout winter, etc. This season, leaves came in but it's been unpredictably cold so this weekend was first trip outside. But the leaves have started to dry up and shrivel. I've kept it very wet, and yesterday put it in a big pot of water. That doesn't seem to have helped and it has continued to yellow - quickly. What you see has happened over the past week. I feed it a weak liquid plant food 10-10-10 every week. Please help - quickly.