How long has your plant been on 12/12 for? Are you using a timer on your lights?
Have you checked for light leaks.. even a tiny light in an extension cord?
There are a good few probabilities.. but start at the basics. Just in case 🤷♂️🏻
So my research tells me. And what I have read..and dont think what about outdoor and seeing the moon. And not having issues... Because suns power v moon power science. Plenty on Google. But I dont have any light leaks... just to be sure. 🤞🏼