Sharry baby poor blooming - how to prevent?

[Phyrex]

This sharry baby finished blooming mid November 2008 and started spiking again around christmas. Now all flowers have opened but there are only 3 and it doesn't appear that the other nodes on the spike are doing anything. When I first got the plant the spike that it had at that point only had 3-4 flowers (semi-wilted) but this was on a mature p-bulb. This spike has now formed on a relatively young p-bulb. Is there any way of preventing such a poor blooming on a young p-bulb and save up it's energy when it's ready to "perform"? I'm worried that the recent trend of having one good spike and then one poor one will continue. It's in a 5" S/H pot and has 5 mature p-bulbs, 1 young one, and 1 new growth.