I think the only way to disconnect yourself from The End would be to somehow become immortal

But also you’d need to not sleep n stuff

I think the immortal dice guys are avatars of The End, and it’s also heavily implied that Oliver is immortal, so immortality apparently isn’t enough to free yourself of The End. Though! You’d think it would be!

However, that does leave the question….if immortality isn’t enough to cut the connection between someone and The End, then what on Earth would be?