How to limit the files Adobe reader views?

Hello, everyone. I was wondering if there was a way to make Adobe reader view files from one specific folder only. I have like hundreds of pdfs on my mobile device which I technically never open but still don't want to delete. I have moved alltall important pdfs into one folder, but Adobe scans my entire phone and shows all the files which, to me, seems like a clutter. Is there any way to select which directory Adobe can scan for files? 

Thanks in advance.