baby waking early

Kara • Married 🇨🇦 SAHM Girl 09/09/16 -x- Boy 08/29/19 Waiting to TTC #3

My little girl is 15m old. She used to wake between 6 and 7 each morning but has been waking up at 5 for a week now and I can't seem to fix it... She naps at about 12 (has been more like 11 since she started 5ams) and sleeps 2-2.5 hours and goes down around 630-730 to sleep. She wakes once in the night to breastfeed. I am wondering if this will correct itself, I have tried early bed time all this week but it hasn't helped.