I am not suggesting for you to do that, you have to know what is right for you. Some people get more side effects than others, i.e. impact to cholestrol levels, kidneys, liver, and so on. You need to know those things for yourself, nobody here knows your body.
Some do consider PCT as time on, so:
10 week cycle
2-3 week break
4-6 week PCT
That adds up to 16 weeks, or as many as 19 weeks, leaving only enough time for maybe 1.5 cycles a year.
Do you think many people actually follow that? I sure dont see it much. But again, everyones body is different, everyones goals, and everyones choices. Just because I mention someone else does it a certain way doesn't mean I'm trying to push it on anyone, like I said I dont know anyones body here but my own.