How to stop upload of one file to iCloud

My internet connection is very bad these days (provider working to fix it) but I need to upload one 750 mb file (a compressed folder) to Google Drive for a client. How can I stop the automatic upload of the same file to iCloud?

The upload to GD would be a lot faster if I could just turn off iCloud upload of that same zip file.

And I don't want to turn it off in the settings because it says it'll remove everything stored on my Mac. (which is pretty illogical to begin with).

Thanks in advance!