Hi Deebie! Same here, very bone dry in my area. Aside from those rocks and skewers, I really watch what our sensors say. Just got to admire the tenacity of succulents when I see the humidity levels are already going down to 20% to 0%. So typically I do not expect much blooming here anymore in summer, the plants will just go semi-dormant as they adjust to the heat, then they resume their blooming in mid Fall.
Blondie, I saw in another thread you did mention you are from Florida, so your Hoya will be very happy with the humidity levels there. Just do not overwater, allow intervals. I will follow too what Kate suggested, to protect the succulent leaves of your Hoya.