So, its still going to be the same dry material.

Why is it a problem, the actual shift is not noticeable when happening (most likely).Is it non closing doors, floor in the kitchen (for instance) sagging badly near the stove.Maybe get guy under there to shim up the low spots closer to level in some areas.Since you lived there it might have gone way out of wack in some places.They need to understand Texas has muck for soil in some places.Good Luck!

When the l/o failed (partly) because the sprinkler system twice flooded my full, finished basement @$1800 in carpet and pad, drying it myself each time. 

I would dry wall over the plaster.

Get yourself a dry erase board and put it up in your office, bedroom, where-ever you will see all the time.

., installing a new toilet, what if soil stack needs replacing?).

Open a window or turn on the exhaust fan to allow fresh air to circulate.Step 2: SafetyPut on rubber gloves and, if you're sensitive to mold, safety goggles or a mask.Step 3: Remove ItemsTake out any items or toiletries from the shower to access all the affected areas.Step 4: Dry BrushingStart by using a dry scrubbing brush to loosen and remove any loose mold or mildew on the shower walls and grout.

I mean it’s pretty cut and dried to me!

Super easy to paint a spot in the middle of the wall & you can not tell it when it dries.

The COVID money is just now starting to dry up.