whch thing are you using to make this happen? i forget if there are any extensions that handle this specifically, but there was an explanation of how to do this with a generic extension that handles custom modifications to webpages: https://forum.inaturalist.org/t/easy-instructions-to-turn-inaturalist-in-to-a-quiz-mode-version/29780/7.
there’s also a feature request for this functionality: https://forum.inaturalist.org/t/make-an-optional-hide-current-identifications-setting/3376.