I can't figure out what's going on with this guy. He started dropping leaves on one branch last week. They didn't turn yellow first.....just dropped them. Now the lower branches are turning yellow and he's droopy and sad looking. I just replanted him last night in fresh soil and a bigger pot. He gets sunlight from a window, as I'm treating for aphids outside, but I can put him out soon. You can see his leaves look weird with thin "white" spots. These are how the leaves grew in, it's not bugs or anything. Please help me!