Disable language-switch for a specific template

Context: A website for a University which will have a ‘field journal’ (= blog) for students to post about their exchange projects.

It’s a multilang website (default: English, second: dutch).

Question: The posts should only be made in one language since they don’t plan to translate every students post. Is it possible to disable the language-switch for this page only? A way to fall back on the default language while automatically being mirrored to the second-language?

Yes, you can show/hide the language switch based on a condition.

That is the default behavior, anyway, if there is no content for the current language.