time to water this Catasetum?

[lobotomizedgoat]

I picked up this little Fredclarkeara a couple months ago while it was still dormant. It started growing a week later and this is where it is at now. Technically, the longest root that I can see is only ~2 inches, but considering the size of the growth relative to the old bulbs is it, perhaps, time to start watering? I have not measured it regularly, but I would say that growth has slowed over the last week or two.

I've combed through some Catasetum advice (including a nice PDF from Sunset Valley Orchids that I found here) but many of the examples seem to be for larger plants and I wonder if the specifics need adjustment. Also, this is my first plant of the alliance so I could use the extra help.