Calanthe rosea

[Dulcinea]

I split my Calanthe rosea plant into 6 pots. What I’ve read is not to water until new growth is about 6” high or roots have grown down into the soil. One of the 6 has reached that stage and has been put outside for the summer. The other 5 are still in the greenhouse where temps go up to 95° with no way to cool it down. Right now there is a ceiling fan on. Those are the only orchids still indoors. Could it be they’re not growing (they’re all at about 2” and short roots) because of the heat? I was trying to keep them dry until they reached the “proper size”.

Any ideas? I’ve had the main plant since about 2012 but for some reason never divided it before. They look healthy!