Even with his sparse sense of time in this place, Kyrie knew he spent one week or two, minimum, to prepare everything for his departure out of this husk of what once was.
Metal crates for storing food and the cans he found scattered around this place in expeditions down the rooms he couldn't access before because of his weakened state, melting walls, and unburying corridors to reach them.
Making thick ropes out of cloth found in dormitories, although they were clothes before, bags made of the rabbit's hide, in case he needed them for something, like storing meat for drying purposes, or who knows, nuts and berries if they somehow get to blossom somewhere in this frozen hell.
Fortify his bath barrel to be thicker and endure more heat, as well as make it bigger to store a good chunk of his crates for traveling purposes. Dragging all of those crates around was troublesome, if they were in the barrel, part of the work would be cut short.