I hope that for Gracilis the new growth will continue, because I did a cutting of a hybrid (N. Indah?) that has a long internode length, I was happy to see that there were several growth from nodes, however after while most of them have blackened and died, ending up with only 1 growth tip that continued to now become a vine.
So maybe they will grow into 2 and you can do another cutting sometime in the future, or they might die and just end up 1 strong growth. That is at least my experience, it would be nice for you though if most of the growth continue to grow
TTFN
Arvin