course spent hook

 add_action('wplms_dashboard_course_progress_student_list',  function ($user_id ,$course_id , $percentage){

   if(function_exists('bp_is_my_profile') && bp_is_my_profile()){

       if(class_exists('WPLMS_Unit_Timings_Init') && function_exists('tofriendlytime')){

           $user_id = get_current_user_id();

           $obj = WPLMS_Unit_Timings_Init::Instance_WPLMS_Unit_Timings_Init();

           $time_spent = $obj->get_course_time_spent( $user_id,$course_id );

           if(!empty($time_spent)){

               $time_spent = tofriendlytime($time_spent);

               echo '<div class="wplms_course_time_spent_in_course"><span>'.__('Time Spent:','wplms-ut').'</span><a href="#" class="wplms_course_time_spent" data-user="'.$user_id.'" data-course="'.$course_id.'" data-security="'.wp_create_nonce($course_id.'_wplms_unit_timings_security_'.$user_id).'"> '.$time_spent.'</a></div>';

           }

       }

   }

},99999999,3);