Help I need more information about this method.

[Exiled spirit]

I need a backup plan in case SN failed. so I was thinking about putting a big trash bag over my head and making sure it's well-closed around my neck. If I did so, how long would it take to lose consciousness? would drinking alcohol be helpful in reducing the intensity of the panic that I would experience?

 

[Intoxicated]

so I was thinking about putting a big trash bag over my head and making sure it's well-closed around my neck. If I did so, how long would it take to lose consciousness?

If you fill the bag with some almost oxygen-free gas (like nitrogen, nitrous oxide, or butane), exhale fully before placing the bag over the head, don't mix the gas with too much air (more than 25 - 28% by volume), and breathe the gas deeply at the rate of 1 breath per 2 - 4 seconds, then loss of consciousness should happen in 20 - 60 seconds since the first inhalation.

would drinking alcohol be helpful in reducing the intensity of the panic that I would experience?

Drinking alcohol can alter your ability to properly secure the bag over the head.

 

[Exiled spirit]

If you fill the bag with some almost oxygen-free gas (like nitrogen, nitrous oxide, or butane), exhale fully before placing the bag over the head, don't mix the gas with too much air (more than 25 - 28% by volume), and breathe the gas deeply at the rate of 1 breath per 2 - 4 seconds, then loss of consciousness should happen in 20 - 60 seconds since the first inhalation.

If I didn't use any gas, how long does it take to lose consciousness?

Drinking alcohol can alter your ability to properly secure the bag over the head.

I wouldn't drink too much. I would drink a small amount to relax me. Would that be a good idea?