1 year old waking up earlier?

Normally she wakes up in the morning between half 6-half 7, but the last 2 weeks or so, she has been waking at 5- half 5.....(odd occasion half 4 😩) sometimes I can go back in, lay her down and she will go back to sleep for half hour or so but most of the time she screams 🤦‍♀️

Weve tried later bedtime, changing nappy when she first wakes, giving extra bottle, giving water, white noise, toys to wear her out, crying it out etc

Nothing is stopping the earlier wake ups??

Note: she goes to bed at 7pm-half 7pm