Migrating from OneDrive to iCloud with low Mac disk space

Hi,

I have a MacBook Pro with only 120GB of disk space, of which only 30GB available.

At the moment I have uploaded around 100GB worth of data on OneDrive, but I would like to move everything to iCloud leveraging the 200GB plan.

The problem is that I don't have enough disk space on my Mac to download everything from OneDrive and put it in my Documents folder to let iCloud Drive sync the stuff in there.

The only solution which comes to my mind is to split my OneDrive data in multiple parts, and download them one by one. Unfortunately though, it seems that is not possible to force iCloud Drive to put stuff in cloud without occupying disk space.

I fear that iCloud Drive could be only useful if you have enough disk space to accomodate everything. Am I correct? If not, do you have any suggestion about which could be the best method of procedure?

Thank you so much