I have a 7.5 month old DD who was waking 5.30-6am which for me was just too early. I was getting up and giving her a feed and then back to bed as it was still dark back to bed till 8.30am normally. I was dreading the thought of having a toddler who would continue to wake up at that time. So I started getting her up at 7.30am not matter what, it only took a few days and this week she has been sleeping 7pm - 7am most nights.
I wonder if you tweak her day naps if it would make any difference?
sorry not much help!
disco