BC binosa kirk how to get more growth

[ladyk]

Hello Orchid enthusiasts. I am new to posting in this forum, although I have been lurking in the background getting information and enjoying discussions for some time.
I have a BC Binosa kirk that I have had for several years and it has been an annual bloomer for me. However, it seems that it only wants to put out one new lead each year, so I only get one spike. I currently have one spike with 4 buds. How can I stimulate this plant to make more leads so I can get more spikes? It is currently in a 6" pot potted in coarse bark media and has 7 stems, 6 old which previously bloomed and the one that is currently in spike. Maybe I should be fertilizing it more (I fertilize at random) and after the spike is done and new lead begins, maybe more nitrogen to stimulate growth? Any advice would be appreciated.