I would also just wait. With every new developmental milestone Ella went through she woke early as well (they just want to practice their new skill). After a while (maybe a couple of weeks????) she went back to normal.
She was also a big day sleeper (i.e. now at nearly 3 she sleeps for 3 hrs during the day) and I have always let her sleep as long as she wants during the day (and she still sleeps well at night and was always in bed by 7).