Britgirl5678 Is there a reason you can't simply delete the existing install and let the EA App redownload the content? It sounds like it would be faster than trying anything else here.
If that's not possible, try "downloading" only the base game, which is more like 20 GB. If you don't even have that much free space, delete some EP folders inside the main Sims 4 folder until you do (and restart your computer after deleting the files). If necessary, you can "download" your packs afterwards. The end result would be you might need to reinstall a few expansions, but not the entire game.
Sorry I should have said I did try doing this too! I don't know how I forgot to mention that but yes that didn't seem to work either.
