[Question regarding removal of "automatic unlock" and best practice to get everything out of Gdrive]

Hello, 

I'm in the final steps of getting all my data out of my Google Drive due to their policy changes. 

I have one drive where I have activated "automatic unlock". Unfortunaly the Cache is on my C drive which does not hold enough free space (since "to upload" gets larger all the time). 
How can I remove the saved key?
Changing the Cachefolder is impossible without reattaching the drives. Correct? Any other "hacks" I might try?

My second question would be if there are any proposed ways to get everything out? 

Regards
 

[Download disk from Cloud to local mounting]

Is there hope to get a tool? 

Google is pulling the trigger here as well and I'm unsure if I can get everything...