Need help with charcoal Method

[SadCryingBunny]

Hi, anybody have stastics on how successful the charcoal method is? Like is there many users who attempt this and have passed? I've tried Nitrogen with a hood and can't tolerate the gas as it gives me severe headache before passing out. If I burn 2 kg of charcoal in each pot totalling to 2 starting them with a chimney and placed them in a sealed tent with thick plastic sheets duct taped everywhere, so it's as sealed as can be. I will use sleeping pills and when I enter I will likely lose consciousness pretty quickly. Is there a chance I still survive? Any recommendations.