FL PE2 - how to breath?

Finding a good breathing pattern was a key enabler of mastering FL PE1, I settled on 2 sec inspiration and 2 sec expiration and kept in synch with counting the time.

For PE2 I'm struggling to settle on a breathing pattern, going back and forth between 1 rep inspiring / 1 rep expiring and inspiring/expiring every rep.

Any recommendation on this? What are you guys doing?

I personally prefer to take short, shallow breaths as I do both of these exercises. For PE2 I breath out as I rock back and in as I rock forward.