Hoya glabra is a hot/warm grower and it tends to like to grow moist. This species has been found growing in mangrove forest so think warm, moist and bright light but no direct sun.
I have found my plant fairly slow to start developing large leaves but once it has a good root system the leaves quickly reach at least six inches in length or larger.

Mike

thank you...mike.

it's true that you say....in fact my rooted cuttings have little roots and are firm.

i hope it starts to grow,conditions are those that you said.

Did it make it?