Downgrade Drupal 8 "themeforest-19171997-click-multipurpose-responsive-drupal-8-theme" to Drupal 7

Hello Admin,

Hope you are doing great!! I need a favour from you. Is there anyway, that I can convert “themeforest-19171997-click-multipurpose-responsive-Drupal-8-theme” to Drupal 7. We already made a site with this theme. But there is a client requirement to make a site in Drupal 7.
In which they are comfortable to work on. So please suggest me, what can I do now.