Take a look at neovim 0.5 beta [0]. It has native support for LSP [1], and it's on par with other editors.

[0]: https://github.com/neovim/neovim [1]: https://neovim.io/doc/user/lsp.html

If you can please let me know how to turn this off in neovim with its native LSP support, I'd appreciate it.

It is unclear what exactly you wish to turn off, but you might be looking for this option: https://rust-analyzer.github.io/manual.html#rust-analyzer.di...

There should be an option to turn on cargo check only on file save

I use cargo as my linter now, but I'd like to use analyzer on file save