spot on 100%, nodding out can quite easliy be a a critical emergency, it's not something that you should use as a safe warning.
Just for clarity having reread my earlier post, the point I was trying to make on nodding so it's clear, the total amount of GHB taken in a session when you are redosing is a factor for nodding out as well as each dose taken, GHB will build in your system given half life. Redosing too frequently is a CNS risk, redosing too many times is a CNS risk, redosing too high amount is a CNS risk, taking too much in a single session is a CNS risk, taking too high an inital dose is a CNS risk.....
If you're following good HR practice, dosage and titrating up you can STILL find you have taken too much in a session causing you to nod out because you've redosed too many times and/or redosed too quickly, in that specific situation the nod is a sign to STOP redosing - there's a difference here from a warning sign & minor nod when trying to practice "good" HR because you're "just over the limit" (we all get it wrong at times) versus having taken too much and Ging out versus taking far too much and being in serious danger. Important you know the differences and are educated!
Don't redose ideally, but if you must, limit your redosing to 50% of inital dose, try not to redose more than twice, and ensure your redoses are more than 1 hour apart (ideally 1.5 hours).
These are practical pointers because people are greedy and get carried away, titratation is best practice, there's always another day that way.