bedtime time

How do you all cope with 7-730 bedtimes everytime my baby sleeps at this time she wakes up at 5am or earlier i cant live like that im so tired she also wakes multiple times throughout the night will look asleep in her cot soon as im back into my bed shes awake somehow. If she sleeps between 9-930 which is classed as to late she wakes up once does 3.5-5.5 hour stretches and gets up at 0730am both have pros and cons for me i just dont know why she wakes so often with an early bedtime