The freeing bit in that is the sense of agency and control. We are very very attached to those things because in the construction blueprints of our minds we anchor a sense of self and a sense of happiness unconditionally with control and agency. Most people don't realize just how much they actually do this because they consider themselves healthy so it's out of their mind, but for people at the edge these words take on a very clear, material shape.
The other person who replied to you is right about the fact that you are but one oscillation away from doing something you probably wouldn't do the next day though, so while I understand your approach I would advise you to build into it a couple safeguards that ensure a reasonable amount of time passes where you can look at yourself and persistently decide to check out.
If you do need to make it available to yourself, just build a way for the process to take time before you can "pull the trigger". Filter out the high-frequency noise.
Anecdotally, I'd say even something on the order of weeks/months. And do this while you're in a decent place mentally, so that you can be kind to the version of you that goes through tougher times.
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The bigger picture, when doing this, is working towards realizing that you can gradually release the grip on this need for control through various things: at first, through practical things like having proven to yourself that you could get there already once therefore you can always do it again. But gradually, by being able to digest the flow of your emotions as they are, and figuring out how to put an increasing amount of tools, communication and basically distance between you and your end.