Hoya bellas with yellowing leaves

[Colm Osiris]

one of the two most recently planted plants hasn't made it, sadly, but i've taken the healthy leaves off as a cutting. i'm wondering if i should do the same with this one? i don't think it's going to make it otherwise.

 

[Colm Osiris]

this is the middle of the three remaining plants. is this one going to be okay, or should i take cuttings?

 

[Colm Osiris]

this is the third plant, and the most healthy. there were a few yellow leaves, but not for a while now.