Tilly the Horsfield tortoise is around 2 years old and up until a week ago she/he was putting on about 2 grams a week. In the last couple of days, she is refusing to eat and has lost a gram in weight. She is also sleeping a lot. We are worried about her, is there anything we can do? She has also been trying to climb out of her table (we found her on her back a couple of times) or dig her way out.