When to repot deciduous orchid?

[PuiPuiMolcar]

My catasetum are now in full bald mode, but should I wait until new growth to repot them? and would they still prefer to be in a more compact pot or can they move to a bigger one? I know that they like to be very moist all the time, but being in the small pot like when I first have them I treat them like mini Vanda where I have to water them almost everyday because they dry up very quickly.

As for dendrobium Aphyllums, they tend to flower after their rest period instead growing new cane right away, I want to repot them right before budding but I'm afraid that
will make them drop bloom. what should I do?