My dd (nearly 2) has suddenly taken to waking up around 3am and then not going back to sleep. We've tried water, calpol (teething) and then we head in and out of her room for a couple of hours trying to settle her (not leaving it very long in between). Just don't know what to try. She usually has one nap after lunch but has had to have very short naps around 9 (45 mins) as well recently just to get by. I don't want to do CIO but any other advice welcomed - thanks!