I'm hoping someone could help me with our olive tree. We've had it just over a year with no problems. Within the last few weeks, the leaves are turning brown and falling off. The amount of leaves I sweep up each day makes me feel it will soon lose them all. The top leaves are curling in a bit. I water it 1-2 times a week, 2 when it's in the high 80's - 90's, and depending on how the first three inches of soil feels. It's facing southwest and gets lots of sun each day. We are in Portland where our summer has been pretty warm, last week it's been in the mid 90's. We were told they are very drought tolerant and can handle the heat and lack of water, but that the potted plants will need more that the trees in the ground. Can anyone give me advice on what I could try to help it? The leaves that are green are looking really good. And there is some new growth as well. Thank you! (also, I clear out all of the dead leaves inside that pot daily and that's what I wake up to)