David,
I found the file which is inside wp-content that is producing the huge backup size. As you recommend I specifically excluded it in the settings box.
However, now Updraftplus is asking me to "re-authenticate" Google Drive.
I have no idea why this is necessary. I used the link provided at the top of the screen that says that clicking will re-authenticate. t does not do this - even after several tries.
Do I need to start over at Google Developer Tools and recreate the codes for the setting fields in Updraftplus?
Thanking you in advance for your assistance.