I got into doing this Wim Hof breathing exercise a few years ago and it was definitely intense. Unsure if this is related but sounds similar.
But yeah it had a layer of unpleasantness that made me not continue long term.
All practices were 3 breaths only. If you really enjoyed one or the other, you can do them a few times a day.
Because exactly as you say, you don’t want to disturb the natural pattern. If you have an unhealthy breathing pattern, the idea is that yoga, rest and relaxation will take care of the rest.
Beyond that we are not doctors, so if I noticed something peculiar with someone’s breathing, or it came up, I would direct them to a professional.
I never liked the Hof method, it works on the wrong side of the nervous system for me, as it’s too activated. I feel it’s good perhaps if you got to do something stressful and you need resilience.