Forcing Adobe Acrobat to stop exporting after a certain amount of time

Hi,

I am trying to export about a thousand PDFs to .docx. I purchased Adobe Acrobat Export PDF, and it works for the majority of my PDFs, but it gets stuck on a few. These few PDFs fail to convert at all and clog up the queue: since it looks like only 4 PDFs can be converting at one time, after 4 of these unconvertable PDFs show up, the process completely stops. I am not willing to delete all the PDFs that won't convert, but I'm fine with not having them converted.

So, is there a way to tell Acrobat to stop converting PDFs if it hasn't worked for 5 minutes, say? I attached one of these PDFs that can't be converted.