Wrong light schedule

Hey there DrDing, will everything be okay? only way to know is to grow. But you're right to be worried , light schedule fluctuations like you're doing (12/12 to 18/6 and back again week on week) can cause light stress to the plant or delay flowering. it can also cause the plant to "get confused" and flower and veg at the same time , a technique called "super cropping" or (monster cropping? i think different growers sometimes use the same terms for different things). So perhaps it's a good thing, but dont let up your vigilance and check them fully every few days for nanners , if you can catch them quick enough you'll be able to control it. hope this helps ! 🚀