8 month old early mornings

Hello, my 8 month old has been waking up around 5/6am lately. I try to leave her in the crib until 7am but she still keeps waking up early. We aim to put her to sleep between 7-8pm. She is also still doing 3 naps. The first 2 range from 45 minutes - 1.45 minutes. And the last one is