Growing Hoya collina Part Two

Hoya collina started out fairly strongly and grew pretty well over its first winter with very few leaves getting the frosted color of my first specimen. I repotted regularly and my plant grew into a sizable specimen. It all started to go downhill during the winter of 2018/2019 when leaves started rapidly yellowing and I was continually pulling them off, because if there is one thing I hate is yellow leaves on a Hoya! I probably lost 20 percent of the leaves that winter. Below the yellow crappy looking plant: