My 18 month DD has always been a generally good sleeper save for a few episodes of teething/colds etc but I would say has mostly always woken early - around 5:30/6. She has gone a few weeks waking at 6:30/7 but that's probably 20% of the time.
This has never been a problem for me as she is as always down by 7pm for the evening but for the past month or so she has been going later and later at night. Last night she eventually fell asleep at about 8:30 and was awake at 5:30 this morning, it just doesn't seem enough sleep for her?!
She has one nap a day - usually 1 - 3pm, she has a dummy to sleep, can self settle and eats well. Is anyone else having this problem or have any advice? She has had shorter naps when we are out in the afternoon but this seemed to make no difference at all!