Photoperiod? or Auto its week 7

Hello If you're at the 7th week and your seeing no signs of pre flowers or anything like that then that's a pretty good indication that it is a photo. Plant. I have rarely had an auto flower that didn't start flowering by weeks 4, 5 or 6. But even a photo. Plant with that low of ours may start flowering when you don't want it to. Sometimes when you're close to the 12 hour timeline they can get confused. I'd say if you don't see any pistils within the next week you can basically guarantee its photoperiod and plan to flip it when ready to flower. Happy growing