I’ve had my fiddle leaf fig for about eight months. Sometimes it seems to be doing well, and sometimes, like lately, a bottom leaf will turn yellow and drop off. After reading a few posts here, I checked the roots, but I don’t know enough to know whether this is normal. it looks like there are some whitish maybe mold areas at the bottom of the pot? The roots look healthy but if they are coming out of the bottom, does that mean I should re-pot? It is directly in an east window and I water it once a week. I have sitting in a larger pot on top of that little grate for drainage.