Just viewing this from a sociological perspective it's amazing that at this level of practice and faith, these monks are actually participating in the wearing of face diapers (masks). There's so much to say/ask about that that I'm not even going to start.
Another example of a person who prepared for her own death consciously was Myrtle Fillmore, founder of Unity Church. She announced, after writing her last letter, that she would retire to her room and pass from her body. She did. She lived a life of consciousness and closeness to God. That seems to be what it takes to make a spiritually sound transition. No matter your religious persuasion.