Sleep schedule?

What is everyone’s LO’s sleep schedule? My daughter goes to sleep at 8:30pm and sleeps until 4/5am usually (sometimes she wakes at 12am, it fluctuates every night) she’s recently been waking up again at 6am and she used to sleep until 7/8am. I’ve been thinking I should push her bedtime to 9pm so she sleeps longer in the AM, then I think is that too late? Our night routine is diaper change and pj’s, boob and book then goodnight kisses and bed. She’s EBF, I’ve also wondered if homogenized milk at bedtime would help her sleep better as well, instead of just breast milk. What’s everyone suggestions? 💗