Growing Hoya sp. IM-08 Part Four

I find that while Hoya sp. IM-08 is a vigorous and prolific grower, it is rather stingy with its flowerings. Since I bloomed the plant the first time, I have only had a couple more flowers. There is some kind of blooming trigger that I have not figured out as of yet. I believe the secret must lie with increasing or decreasing day length.