I'd highly advocate against "barely dying", it would be playing with fire. If you're not ready to CTB yet, don't at all, not nearly either. Inducing a coma yourself is incredibly risky - even with the right medical methods. You'd be more prone either winding up dead, or with permanent injuries. Putting all of the technical troubles aside, you'd have to find a good explanation for however you'd end up in the hospital as well. Chances are people will suspect a failed suicide attempt, putting you at risk of getting admitted to a mental hospital.