How much doxylamine should I take?

[Rumi]

I will be attempting CTB with the plastic bag method.

10 minutes after I take a dose of sleeping pills, I will place a large plastic bag over my head, and secure it to my neck with an elastic band.

The issue is, I don't know how much to take to ensure that I will be in a deep sleep when the oxygen in the bag runs out.

Does anyone who has experience with this method, or with sleeping pills in general, know how much I should take to make this method work?

Thanks.

 

[deadhead12!]

this method has failed. sleeping meds aren't usually strong enough to fight survival instinct