Don't really need a wrapper method for the validations

app/models/case_log.rb

@@ -9,7 +9,7 @@ class CaseLogValidator < ActiveModel::Validator
     # If we've come from the form UI we only want to validate the specific fields
     # that have just been submitted. If we're submitting a log via API or Bulk Upload
     # we want to validate all data fields.
-    question_to_validate = options[:previous_page]
+    question_to_validate = options[:page]
     if question_to_validate
       if respond_to?("validate_#{question_to_validate}")
         public_send("validate_#{question_to_validate}", record)
@@ -40,19 +40,16 @@ class CaseLog < ApplicationRecord
   include SoftValidations
   default_scope -> { kept }
 
-  validate :instance_validations
+  validates_with  CaseLogValidator, ({ page: @current_page } || {})
   before_save :update_status!
 
-  attr_accessor :current_page, :previous_page
+  attr_accessor :previous_page
+  attr_writer :current_page
 
   enum status: { "not_started" => 0, "in_progress" => 1, "completed" => 2 }
 
   AUTOGENERATED_FIELDS = %w[id status created_at updated_at discarded_at].freeze
 
-  def instance_validations
-    validates_with CaseLogValidator, ({ current_page: current_page } || {})
-  end
-
   def self.editable_fields
     attribute_names - AUTOGENERATED_FIELDS
   end