Not sure what to do

My almost 15 month old has been getting up earlier and earlier since mid October. Around her 1st birthday she was fighting her second nap all the time, so we transitioned to one, and she slept great. At night she would sleep from roughly 7 to 7/7:30, so at least 12 hours at night.

Then all of a sudden about 6 weeks later she starts waking up at 5:30, so I gave her a second nap to make up for her sleep, figuring it was probably a teething thing. It has only gotten worse though- 5 am, and sometimes waking up earlier and will not go back down unless you hold her.

I’m putting her back on one nap because she’s started to fight it again. I just found out I’m pregnant again too and I need sleep 😴