hey guys, i have a question. how long does it usually take for a complete shed? this is my first. max shed her feet and back legs first, and then lost a piece on her back about the size of a silver dollar. and nothing since. (that was maybe 6 weeks-2 months ago?) the spot on her back does not look at all like it is coming off anytime soon. the edges aren't even peeling anymore. is this something i should worry about?