the ones I saw, also flowering, were small compared to a standard zygo. About 1/3 of the size of a standard and about 1/2 the size of a Louisendorf. Is that the case with yours ? It appears to be an ideal window-sill plant.
My plant is in a 3" pot the plant it self is 9 1/2 inches plant and spike is 12" it only has One mature pseudo bulb and the new growth from witch the new spikes are growing.
That sounds comparable to mine! The key to success for me was learning that they need to be kept a little moister. I have a tendency to keep things a little too dry, especially in winter when the relative humidity inside is too low.