Hard time fall asleep for bedtime

I think my 15-month-old has been having some issues with bedtime sleep.

My daughter has been needing about 30 mins to fall asleep and sometimes 50 mins (she used to fall asleep in about 10 mins..). And wakes up around 5 am (but will do 'fall asleep and wake' circle until around 6:15 ish). She's also now way below the average percentage like around 70% ish (she used to be always over