My 8 month old has always been an early waker (around 6 am) but is now waking at 4 when the dawn corus starts. I'm at my wits end. I was happy with 6 as she goes to bed at 6 and we get up early anyway but 4 is just horrible. We have tried black out blinds etc. but nothing seems to work. I now go to bed at 9 in order to get enough sleep.
Sometimes she'll go back to sleep if I rock her in her pram for a bit (I usually leave her murmering in her cot for about half an hour first before she gets grumpy) but by 5/5:30 she's wide awake. I've tried pushing her bedtime until later but it doesn't seem to make any difference. I do think babies are very in tune with the seasons. I'm sure she'll wake later when dawn breaks later but if anyone has any ideas then I'd love to hear them.