diff --git a/app/models/validations/date_validations.rb b/app/models/validations/date_validations.rb
index 379ab9bb5..de264f07e 100644
--- a/app/models/validations/date_validations.rb
+++ b/app/models/validations/date_validations.rb
@@ -69,31 +69,31 @@ module Validations::DateValidations
 private
 
   def previous_collection_start_suffix
-    previous_collection_start_date.strftime("%y").to_i
+    @previous_collection_start_suffix ||= previous_collection_start_date.strftime("%y").to_i
   end
 
   def current_collection_start_suffix
-    current_collection_start_date.strftime("%y").to_i
+    @current_collection_start_suffix ||= current_collection_start_date.strftime("%y").to_i
   end
 
   def previous_collection_start_date
-    FormHandler.instance.lettings_forms["previous_lettings"].start_date
+    @previous_collection_start_date ||= FormHandler.instance.lettings_forms["previous_lettings"].start_date
   end
 
   def previous_collection_end_date
-    FormHandler.instance.lettings_forms["previous_lettings"].end_date
+    @previous_collection_end_date ||= FormHandler.instance.lettings_forms["previous_lettings"].end_date
   end
 
   def current_collection_start_date
-    FormHandler.instance.lettings_forms["current_lettings"].start_date
+    @current_collection_start_date ||= FormHandler.instance.lettings_forms["current_lettings"].start_date
   end
 
   def current_collection_end_date
-    FormHandler.instance.lettings_forms["current_lettings"].end_date
+    @current_collection_end_date ||= FormHandler.instance.lettings_forms["current_lettings"].end_date
   end
 
   def next_collection_start_date
-    FormHandler.instance.lettings_forms["next_lettings"].start_date
+    @next_collection_start_date ||= FormHandler.instance.lettings_forms["next_lettings"].start_date
   end
 
   def is_rsnvac_first_let?(record)