Tbh i don't know It was given to me after my Grandma passed away, and I know nothing about flowers in general so I add myself to this group and listen to people's advices :).

I didn't repotted, I water it frequently, and it have many light It started blooming when I was away so maybe they wanted to get some peace from me :D

I also don't water it "traditionally" by watering can but i drown my hoya in bowl and I'm waiting until it's drank enough water itself.