DD1 is 3.10 and sleeps for at least 12 hours at night, sometimes more if DD2 doesn't wake her up. But she is knackered by lunchtime, and looks like she needs to sleep for a few hours, which wouldn't be a problem but she won't actually sleep!
It's getting to the point where I dread taking her out in the afternoon because she is so tired, especially to anything social as she just whinges and cries the whole time. She doesn't like joining in with anything apart from with myself, DD2 and a few close friends and family, which makes it even harder to do anything, birthday parties are a nightmare. I think she would be happier to be at home all the time, looking at books, drawing and watching films, but that isn't really possible.
Does anybody else have a DC like this, and if so how on earth do you cope?!