for a “bulk” copy of that amount (number files, and size) I’d recommend what everyone else’s saying - don’t do it through USB to your phone…
Recently updgraded my phone from a 64 G SD card to 128, and I used the SD card slot in my laptop to copy everything back (about 60 GB of music files)… woudn’t ever have contemplated doing that over USB with the overhead and clunkiness of Android “MTP” or whatever it’s called…