I only have experince with Dendrochillum magnum and glumaceum, but could be similar to yours. what I have found is that they need a lot of water... I have them growing in S/H (resented the transfer and skipped blooming until next season! - seems to be normal for the genus!), and I need to water twince as often as with the other plants I have in S/H... if you say the medium was very dry, maybe that's been the cause. You need to water more often!
I do not give any rest to my plants, and they seem to be happy this way