Sheryl I think they need a little more water than I tend to give. I'm finding that my fear of overwatering and turned into a habit of underwatering.
Mine all get high light but mostly indirect. The only direct sun they get is when the sun rises in the morning but once it's up the vertical blinds prevent them from getting direct late morning to late afternoon sun. One of my Hoyas has started putting out leaves because of it's new location.
I'm sorry to hear about your Hindu Rope Lin. That is a really beautiful photo of it though.
My rule of thumb is to repot all HD, Lowes, Garden Center or Floral plants. (Not always so with Nursery plants.) I remove as much of the medium as possible and rinse if I'm sure I can do so without damaging the plant. This Hoya was so awkward for me to hold that I was afraid the three super long ropes would break off.