Bulk signing in a single document (vs. Bulk send)

I have a particular Acrobat Pro use case wherein I need to sign an internal QA document that has several signature spaces (up to 8 per page).  All of these are ~33mm in length, and line up vertically on each page, making them easy to locate for an AI logic.  

I might have 100 pages, so up to 800 signatures to complete, every week!  Unfortunately, a signature must appear on each element, not just one per page, or one per document.

My inspection process, which is internally validated and accepted, is to review all elements needing review and, if all pass inspection, then I go back and sign all of the signature spots. (If any elements fail inspection, they can be corrected and then the document reissued).  The document basically affirms all elements have passed.

This is a situation crying out for a bulk signing process that allows me, ideally, to use an Adobe encrypted digital signature to apply to all signature spaces at once.  

I have asked Adobe Support for a way to do this, to no avail.  AI Assist is too basic.

I then attempted, using Microsoft CoPilot, to upload a pdf, use js scripts to identify the signature fields and place digital signature fields there, sign a Primary Signature field using a local digital certificate with password, and then run a jscript to bulk sign the rest.  Got pretty close, but no cigar.  Also, the iterative approach has been frustrating.  I am not a coder, so can't do this from first principles/training/experience.

Can anyone assist with how to do this without having to hire a developer?  We are a small house.  Thanks