The proper method of reinvigoration?

In order to functionally reinvigorate an exanimate "soul" with a consummate abscence of the uppermost consciousness for a prolonged period without extinguishing the indispensable subconscious functions, what would be the proper quantity of a bizarrely vulnerary mixture of vitriolic acid and dilapidated metallic substances for augmentation during the neoembryonic stage? This outrageous obliteration (or concealment) of all sensory understanding would be to intransigently predestine a salubrious incrementation, to provide a "soft landing" to use a common metaphor, under no circumstances would any remotely inhumane or perverse actions occur. What I am referring to as the "neoembryonic stage" is the ephemeral period during which a freshly deceased individual is suspectible to any extradimensional stimulus, and the only state in which incorporating the barrenness-extirpating mixture is achievable. The acquistion of the aforementioned material in an operational state is uttermostly encumbrous and as such it is essential to contrive perfection.

Would somebody be considerate enough to offer advice?