I need to know everything you can tell me about grey rock

[BirthdayRainbow]

I feel, if I've understood it from bits I have read on here, that I need to be more grey rock towards STBEH but would like clarification on what I do, what it means and how it works. TIA.

https://www.talkspace.com/blog/grey-rock-method/

How Does the Grey Rock Method Work?People with narcissistic personality disorder crave attention, and making themselves appear like a grey rock is a way to deprive them of the reactions, or narcissistic supply, that they’re seeking. The tactic includes limiting emotional responses, avoiding eye contact, and removing yourself from situations whenever it’s possible to do so.
The theory is that when a toxic person sees you as a boring, uninteresting, grey rock, they may eventually lose interest. Over time, they might learn that they can’t get emotional reactions or engagement from you. If you’re dealing with a toxic person in your life and you’re looking for a way out of the toxic relationship, read on to learn more about how grey rocking works and to hear tips on how you can try it.