Hello,
Unfortunately, we don’t have option to show AMP version for the Google only.
But what do you mean
I only need amp because Google only allowed 28 resources in search scores, and the theme has a hundred at least.
?
Did you create robots.txt file and disallowed indexing of the theme and plugins files https://www.8theme.com/topic/fid-is-not-fetching/#post-295317 ?
Regards