Two orchids in spike! to cut or not to cut old stems?

[Alexiamada]

I have three beautiful orchids at the moment. The oldest I have just finished blooming and I decided to cut the old spike as it had already rebloomed on that same spike and I wanted it to rest. Now my two youngsters a violet one with two spikes that I had for an year and was in bloom for practically all that time. And a yellow one that I purchased a few months ago and had already dropped its blooms. For both these orchids I had decided to skip cutting down the spike as they're very healthy specimens and I wanted to see if I could get them to bloom on their old spikes. To my surprise this Monday when I decided to give them a bath I noticed that both these orchids have bypassed my attempt and both are in spike! The violet with two old spikes is growing two individual new ones and the small yellow is growing one. Now my question is the following: should I proceed with cutting the old spikes to concentrate the energy on the new growth or just let everything the way it is to avoid putting my babies in shock! On a separate note this is only the second Time in my life to experience the blooming process and only a few months apart from the very first one. I'm scared to screw things up! My first one fad 7 blooms and three suffered from bud blast. If anyone can please help I would appreciate it. Also any info on getting bigger spikes and bigger flowers would be appreciated ;-)

Thank you all in advance.