seem that 32 gig memory is grossly inadequate for the many updates that would be needed
I would tend to agree.
I thought that Microsoft had addressed this and added support for relocating the update files to external media for use during the process.
i have tried removing apps and unnecessary data from the tablet.
I can only add that if you haven't already, you might look into adding
hiberfil.sys (should disappear when you disable hibernation but check and make sure)
pagefile.sys (set page file to zero (0) / "No page file" and then delete it
swapfile.sys (not even sure this is still around but double check and get rid of it
AND System Restore points.
When finished you should be able to reset the above as previous configured.
Additionally, get the ISO that you need to perform the "Upgrade" and save it to external media or SD card.
Mount it where it is by double clicking it and then launch Setup.exe from the virtual optical drive that is created from the mounting.
PLEASE make sure to backup all critical data and create a disk image in advance of proceeding.