Hi Leathal
There seems to be no rhyme or reason as to how cycles work
I consider myself one of the lucky ones
I started out as chromic from age 22- 30 then became episodic and for the next 8 years I was 1 cycle a year of 8-12 weeks about this time of year then in 07 I missed altogether and had a return cycle in 2008.
Since then I am currently in my only cycle since my 2008 event.
The other thing for me is that the longer it has been between cycles the worst they seem to get, with this cycle being worse than any I have had in the past and even my wife has noticed that I seem to have been suffering a lot more this time around.
Unfortuately I can't see how any of this can really help as it seems the manner in which CHs manifest from one person to another is as varied as one could imagine.
Chris