I use Ami as part of my regular pain medication protocol. It increases the effects of the other medications somewhat, similar to alcohol and that is intended. When doubling or tripling the dose, I already fall into a very pleasant and deep sleep state. I'm sure Ami would be able to do the job on my own without any other co-medication. However, it is recommended to use a medium to long-lasting sleeping pill when Ami-CTB is your method and also antiemetics. If you look at the medical case reports of intentional Ami-Intox, you will see that it usually goes much faster then 24 or 48h. In the case reports, respiratory and cardiac arrest usually occur a few hours after taking the medication.
Of course, you shouldn't be disturbed. I would use this method somewhere in a remote forest, in the winter months night temperature around freezing might also help.