Hoya krohniana ‘Eskimo’ Bloom

Hi everyone! A couple of weeks ago I was exited that my Hoya has grown some pedunkle, fast forward and it is now in full bloom.

But since the first little buds sprouted, I noticed that then and when some of them go yellow and fall of.

I'm not really worried about that, because the first umbrella has partially opened and these beauties smell amazing! Like honey!

My question is, who do I treat it now? Shall I fertilize? When yes, how much and with what?

It is potted in a terracotta pot and a substrate of partially coarse pummus and cactus-substrate, and a little drizzle of charcoal and wormhummus.

Thank you all for your thoughts and opinions!