My one year old waking stupidly early - what to do?

[PiperG]

My one year old DS has only been sleeping through the night for a couple of months, but he will only sleep from 7 to about 5. If we're lucky, it's 5.30, it we're unlucky, it's 4.45. I know loads of people encounter this with their babies, and I've read quite a few posts on this, but still feel stuck about what to do!Sometimes we leave him to wail for a bit, but he rarely goes back to sleep, and then just gets himself into a state. Arrgh. Just when I was rejoicing at getting full nights' sleep again, I'm now getting completely knackered again being woken this early all the time. Any ideas about what to do most welcome!

[Dragonbutter]

is he hungry?

[PiperG]

He'll always have a breastfeed then, but I don't think he's starving. I think it's more that he really only seems to need 10 hours sleep! But I feel that somehow I've got to stretch him to 11 ...