Shallow breathing during meditation

[tuckerwphotography]

Within minutes during meditation, my breath becomes extremely shallow to the point of being nearly imperceptible. I start by placing my attention on the breath, but when it becomes so subtle I tend to switch from the breath to outside ambient sounds or a mantra. Some meditation teachers have told me to "keep breathing" and not let my breath get so shallow while others have told me it's fine and to just witness it. Looking for guidance and advice on this front. 

When my breath becomes very subtle I tend to have an easier time witnessing and noting arising thoughts. On the other hand, I feel detached from my body and sometimes "stuck in my head" when breath is so shallow. Thanks for your suggestions.

[Arzack]

Don't do it man, just follow "Bashar's formula", google it.

Edited September 6, 2020 by Arzack

[PopoyeSailor]

It happens to me too. Yes, more subtler the breath is more concentration I Achieve.

It is quite normal. As long as you are not forcefully holding your breath. There's nothing you need to worry about. Please read the post attached.

It is generally said that during full Samadhi, breath stops completely.

Edited September 6, 2020 by PopoyeSailor