My person would go even so far, that developing the factors of awakening “by will” is in the sphere of non-returner-path to some degree upwardly.
Developing Satipatthana complete is the base of the Bojjhaṅgās.
“At any time by will” certain in the sphere of Arahant.
Anyway surely out of frame if a common person tries such.
(Samana Johann)