Hello! Our bunny ears cactus has been growing lots of new nubbins lately, but we just recently noticed it also has these lighter green areas with some brownish patches on one side of the plant. It gets at least 8 hours of direct sun daily, and is in a mix of pumice rock + cactus soil in a 5 inch pot with drainage hole. Is it localized rot from overwatering maybe? Something else? Any help appreciated! 🙂