One nap back to two!?

Has anyone had experience with this? About 3-4 weeks ago at 12 months my little guy was really struggling to get down for naps and bedtime so we transitioned to one nap and it was going relatively well. He was going to bed a little earlier around 6:30 but was still sleeping until around 6:30/7am. The past few days he’s waking up at 5/5:30 and today I had no choice but to do a morning nap at 9:15 (he is sooo fussy and tired) ...so looks like we are back on two nap schedule today. Has anyone experienced this? I don’t really know what to do. I feel like we are going backward and I’m going to further mess up his sleep. Should I just go with his cues or try something different?? Or is it okay to just take it day by day??