I want to be saving a few dollars by downgrading my plan to the 20GB CC photography plan and add a small amount of extra storage. 20GB is too little but 100 would be enough. I can't find a way to do this, it seems that my only option staying with the 1TB plan. Is there a behind the scenes way to add this extra storage?
There are no options to upgrade only storage in that low of an increment that I am aware of. If you wanted to downgrade you could but you would need to find somewhere else to store your data outside of Adobe.