I have a juvenile sulcata (about 9cm SCL) and was wondering how hard the shell should be? It's hard to touch (especially on the top) and by no means "leathery" like I've seen young torts with mbd exhibit but if you put some pressure the sides and bottom (not enough to hurt the animal) are somewhat moveable to a slight degree. It still feels hard just has some movement. Is this normal? He's been putting on weight steadily and eating lots