So next time run the crop to eleven weeks and see if they naturally fatten. Mine does. That would give you a real answer. Not fair to judge the same flower at a eight nine week period as one that is two to three weeks older. I mean if you really wanna know. I had all kinds of things I wanted to know. I tried them all. Light increase, decrease, total darkness, ice water. Most of it I found was a waste of time, another added step, more stress, varied outcomes.
Don’t confuse what I say as there is no other/ better way. I think there is always room for improvement. But, until it makes sense and follows common laws of botany, I turn on, tune in and drop out.

That and one cannot fool Mother Nature.. or at least not completely.