Hoya callistophylla Only Grows For Me Six Weeks Of The Year

Hoya callistophylla likes it so humid that it will only grow for me after it adapts to my summer greenhouse,  It takes it about two months to do that, and then it grows like crazy for six weeks until I have to bring it back inside.  It then goes into complete dormancy and then the cycle starts up again next May.  Below the entire plant along with new growth: