We didn't lower temps at all this year other than the room the BP's in is naturally a bit cooler in the fall months anyways but we didn't change our heating source temps at all. Most of our females took and our males certainly seemed to show lots of interest in breeding.

What we did do is watch the weather forecasts very carefully. As soon as there was a change coming, a storm, whatever, we made sure the males got into the females enclosures. Something about that barometric shift as storms roll in really seems to trigger breeding activities.