What is this?
For all intents and purposes, my autograph tree looks fine. But I notice that she is dropping her big, mature leaves one by one. Her soil is moist deeper in the soil, as I bottom watered her a few days ago. I haven't added more since. But I see browning tips of otherwise perfectly healthy leaves. What am I doing wrong?

3ft to light, direct

4β pot with drainage

Last watered 2 years ago