19 month old sleep advice

Stacey

My 19 month old was always a great sleeper has now done a 360. She always went to bed easily, slept through the night, she basically would have lay down and fell asleep anywhere. Now its like having a new born again, she needs rocked to go to sleep, wakens 1-2 times a night and starts her day any time between 4.30am-5.30am. This has been going on for 3months now. Any advice welcome