I've tried CTB four times already and failed each time. Once with benzos + alcohol, once with rat poison, once with heroin, and once with (fake) fentanyl. I've learned a lot from those past four attempts, whether that's ordering bitcoin, finding a location where nobody will find you early enough to send you to the hospital, or what happens when you get sent to the psychiatric ward and what to say to get out quickly, so I feel pretty confident about CTB with N if I can obtain it.