! How to rejuvenate earthen floor?

I was oiling in another set of small patches in our floor when I noticed how many little nicks and uneven areas had developed over the years.  Mostly due to the extreme humidity in Arkansas, but also due to my negligence in maintenance oiling, I'm thinking the whole earthen floor could use a rejuvenation. I wonder if it is possible to formulate a sort of superfine clay paint, similar to alis to just paint over the entire floor, blending all the patches together, or if the existing old oil in the top coat would cause such a thin layer to flake off.  Has anyone tried a major floor overhaul/rejuvenation?  The low traffic areas still look beautiful, and they just remind me of how good the whole floor could look if I completely redid it. However, I can't tear it up to install a whole new top coat, as my husband is in a wheelchair, and would be completely immobilized by such an upheaval.

I'm pretty sure the oil will prevent a thin layer from sticking. It might be best to just work on getting a good colour match for patches and accept a slight variation.

How old is this floor?