So my 15 month old daughter has never been the best sleeper but I do know she's not the worst. Recently we are all over the place with naps. Some days she has 1 and other days 2. Naps vary in length from 30 mins to 2 hours. She never has a consistent wake up time so it's difficult to know when she should be napping as she doesn't show clear signs. She can make it to lunchtime on 1 nap but doesn't always have a long one (over tiredness I think). She has been waking around 4.45/5.30 and I'm trying to get her back to sleep which sometimes is and sometimes isn't successful. Bedtime is usually 6.30/7 but I have been trying a 6pm bedtime yo see how this works. She falls asleep pretty much immediately upon going into her cot which I think is because she is so tired even if she's still running around before bed. I don't know what's going on because she is very grumpy when she wakes so early so I'm assuming she hasn't had enough sleep. Any suggestions on what to do please?