I have been watering every 10ish days depending on the soil dryness. I just started last week allowing it to sit in the water until saturated to the top and then let it drip dry before returning to his pot. He's been dropping 2-3 leaves that yellow every week.. but this is the first time I've ever seen these brown spots! I pulled the leaves off just in case! Could it be because I'm having it sit and absorb water? Or is it diseased? Any advice to make him healthy again?