Taking 100s of photos without touching phone

Hi, I want to photograph 100s of physical files, each containing over 100 pages, I want to then turn them into digital files, I'm doing this for an 85 year old who will need to go to a retirement home sometime this year, but can't take all his belongings.

I have a good quality android phone, and a macbook, so I've downloaded the appropriate apps, and can take a photo on android phone and it automatically goes to dropbox on my mac.

I have purchased a stand (with light) to hold my phone in exactly the right place, and will use an A4 tray to place each sheet of paper to photograph, I will use a bluetooth device to tell camera to take photo.

 

The problem I have, dropbox keeps asking me questions, "Do you want to take a photo/video etc.", "is that photo good enough?" (x or tick).

 

My whole setup is to avoid having to touch or move the phone, but because of the questions, I can't do this.

Is there a way to set my dropbox to only take photos, and not to ask if the photo is ok?