Help with my mango please. This plant has been doing great! I repotted a month ago, all good. Then suddenly it started drooping, like it needed water, but water did not help. I noticed only the main stalk was drooping, while the lower one seemed fine. I was traveling for a few days, and now that I am home, the droopy leaves have dried up quite a bit. The lower stalk is ok (so far), and even the new growth on the main stalk has continued to grow. Did notice this white in several places. What do I do???? TIA