Three year old sleep

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My toddler can’t sleep through the night for anything. She goes to bed between 7 and 8 every night and she’s up between 7 and 8 every morning. She wakes up like four or five times a night though still. My youngest sleeps through the night from 8 to 7 in the morning no issue. Is anyone else having issues with their toddler sleeping? I’ve tried everything. White noise machine, nightlight, ignoring her, helping her get back in bed and settled down, letting her sleep on our floor when its like third time waking up. I just can’t win.