Any way to speed up flowering?

I have 4 bagseed plants that have been flowering now for 76 days. They buds seem to have done their 2nd kinda growth burst, and I feel a little bad, as I cut off flowering ferts to them 2 weeks ago thinking that they would be done by now.

The plants are healthy, but the trichs are like 90%cloudy/10%clear and I'd like to hit 50%cloudy/50%clear sometime this year...

Can I do anything to speed up this process, at this point?

I have 6 rooted clones that need to move into this room in the next couple of weeks (I pick them up tomorrow but I have another location for them in the short term.)

Stupid unknown genetics...

Increase the number of dark hours. I dont think it'll make that much difference really, but its the only thing I can imagine that you could do.