It has had definite flowers for 33 days. Probably 2 - 4 weeks before harvest at this point.
The buds just started to thicken up.
So would my yield be a little bigger if I let them veg longer and held off on the 12/12 light switch?
Who knows.
Lesson learned: Seed plants can be switched to 12/12 early, it does not damage them at all, but they will grow more slowly than on 18/6. Also, the early switch may not cause the plant to flower any sooner than a plant kept on 18/6 up until preflowers are present.