Limitation of Macbook Pro storage for icloud 2TB files

hi, i have macbook pro 256 GB drive and just subscribed to icloud 2TB, i want to moves all my folders and files which are around 1.4TB. The easiest way for me to copy my 1.4TB size on external hard drives folder by folder to icloud drive through macbook, but run out of spaces fast. Is there any easy and fastest way to upload that 1.4TB? (yes i can upload through icloud on browser, but the limitation u cant upload folder just killing me)

thanks