This hoya is most common, I had it since last year and it was really small (only 3 leaves and 5 cm cutting) but it grew well and fast. Now it’s the first time it makes buds and I was so curious to observe their growing, it’s fascinating ! I read a lot of complaints that it’s a demanding plant, some said it didn’t bloom for years so I consider myself lucky 🙂 because mine already bloomed.
Madyjo's Blog 
That was fast, I had mine for years before it bloomed.
I don’t know why it bloomed so fast, but for sure it made me happy !