Depends on what you want to achieve.
I’ve run 3 cycles to get rid of the remains of my pornaddiction.
Been clean since then. I had 1 cycle of stage 2 and just started stage 3.
I cured my ED from 20 years of pornabuse before starting KB. I gave my best to heal from pmo and the more I was able to abstain, the longer the periods without pmo got, the more the ED vanished.
It’s not like your dick is broken. It’s just your brain is trained to only get aroused from hard stuff. Over time your dopamine system gets a reset and everything goes back to normal.
I’d guess my brain needed about a year to be able to produce regular errections.
But that was way before I knew subs. I’d guess with a few cycles of KB1 and perhaps something like Diamond, you could supercharge this process and cut the time in half.