If I have a document of "X" number of pages, and each document is 2 pages, and I need to add a 2 page document after every existing 2 pages, is there a way to add these extra 2 pages in bulk as opposed to manually adding?
Yes, this can be done using a script.
For example, I've developed this script that allows you to do it very easily. You can purchase it from here:
Custom-made Adobe Scripts: Acrobat -- Insert One PDF File Into Another Multiple Times
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