I have had this peperomia for 5 months now, and I keep seeing two problems. 1) the bottom leaves get large and turn yellow and die off. And then 2) the healthy green foliage never grows any bigger. The leaves stay small, and the overall plant is the same size as when I got it. It just sprouted these two flowering rods, but no other visible growth. I have it in bright indirect light, and I have repotted it and pretty sure no bugs or root rot. Any suggestions?