SYNC: How do I delete files from the cloud?

I am approaching my vault size limit because I was syncing images, audio and video which were taking up a lot of space. I have now unchecked those filetypes for syncing so that I am only syncing textfiles.

I clicked the purge button and have restarted obsidian. But my remote vault size remains the same.

Do I just need to wait longer, or there a way to force clear the large files I am no longer syncing from the remote vault?