Can I slowly transition back to an 18/6 light period?

A question of a fellow grower:
My second plant went 8 weeks without flowering. Given that my first plant transitioned to flowering after only 4 weeks I changed the light schedule to 12/12 to get it into flowering. It is now flowering perfectly and the plant is doing great. I was wondering if I could slowly transition back to an 18/6 light period. Is that ok or should I stick with the 12/12 period for the rest of the way?

I would continue it into schedule, you could end up with it getting stressed out, turning hermaphrodite. Then you end up with seeds.
It’s pretty far into flowering to go back.

Assuming this is an auto, the members that seemed to try the different light schedules claimed to have not seen a huge difference between them. That being said, probably best to just leave at 12/12.