Temp Diff for Phal to set blooms earlier

[FrankP999]

I want to have my phals bloom earlier this year. They are presently under lights at 75-80 degrees with lots of new roots and new leafs.

In the past, I would move them outdoors in the fall as low temps drop to the 60's.

Right now, my outdoor temps are 90 highs and 70 lows. Would the drop from 90 to 70 initiate the bloom cycle? How many days/nights of this would be required to set the blooms?

Essentially, I want to start the bloom setting cycle in August instead of October.

Any suggestions or comments would be really appreciated. Thanks

Frank