Doubling amount of Days for AM6?

[MasterEnki]

Shannon Wrote:
Part of why six stage sets are six stages is to prevent subconscious boredom.

What exactly is subconscious boredom?

If the subconscious gets bored, does it still act upon the suggestions?

Are there any methods / ways to stop subconscious bored (apart from switching things around every few months or so)?

What about Single Stages, if someone was to run a Single Stage for 6-12 months, would it still be effective*?

* For example, after running the same Single Stage for 9 months straight (every day), would it still be as effective on say Day 271, as it would be on say Day 1 (or the first day, after resistance has been overcome)?

Thanks