It seems like what you want to do is perform “imposition” of the document, creating a new PDF file in which each page contains two pages from the original PDF file.
Acrobat does provide the facility to print n-up pages, but not to yield a new PDF file with such imposition.
There are third party Acrobat plug-ins such as Quite Imposing and PDF Snake that provide the facilities you are looking for and much more including “booklet making” and “step and repeat” imposition functions. Other products may also exist to do this.
Others on this forum may advise you to print 2-up to the AdobePDF PostScript printer driver instance, “refrying” a PDF. However, this generally degrades the resultant PDF file in numerous ways. Adobe strongly recommends against this technique!
- Dov