I'm new to the plant word and my aunt gave me this one as a gift and I think it's a Philodendron Xanadu. I have a tiny problem tho: the leaves have small dried spots that look white/tan. Some spots got bigger and now have dried out completely. I've tried googling but still am not sure what it is. The search result that looked the most similar to my plant said it could b Brassica. Do I just cut off all the leaves that have those spots?