diff --git a/view/frontend/web/js/switch-subscription.js b/view/frontend/web/js/switch-subscription.js
index ce2ed9d..7b00af8 100644
--- a/view/frontend/web/js/switch-subscription.js
+++ b/view/frontend/web/js/switch-subscription.js
@@ -1,11 +1,33 @@
 define([
     'jquery',
     'jquery/jquery.cookie',
-    'Magento_Customer/js/customer-data',
-    'Magento_Checkout/js/model/quote',
-    'Magento_Checkout/js/model/cart/totals-processor/default'
-], function ($, cookie, customerData, quote, totalsDefaultProvider) {
+    'Magento_Customer/js/customer-data'
+], function ($, cookie, customerData) {
     $(document).ready(function ($) {
+        /**
+         * Estimate cart totals before refresh on Checkout pages
+         *
+         * Prevent attempting to load Magento_Checkout models on every page
+         *
+         * @param {Object} e
+         * @return void
+         */
+        function estimateTotals (e) {
+            if (window.checkoutConfig) {
+                require([
+                    'Magento_Checkout/js/model/quote',
+                    'Magento_Checkout/js/model/cart/totals-processor/default'
+                ], function (quote, totalsDefaultProvider) {
+                    var sections = ['cart'];
+                    customerData.reload(sections, true);
+
+                    if (e.target.closest("og-offer").getAttribute("location") === "cart") {
+                        totalsDefaultProvider.estimateTotals(quote.shippingAddress());
+                    }
+                });
+            }
+        }
+
         $(document).on('click', 'og-optin-button', function (e) {
             e.preventDefault();
             var subscribedProduct = $(this).closest('og-offer').attr("product");
@@ -15,12 +37,7 @@ define([
                     location.href = window.BASE_URL + 'ordergroove/checksubscription/index';
                     return false;
                 } else {
-                    var sections = ['cart'];
-                    customerData.reload(sections, true);
-                    
-                    if (e.target.closest("og-offer").getAttribute("location") === "cart") {
-                        totalsDefaultProvider.estimateTotals(quote.shippingAddress());
-                    }
+                    estimateTotals(e);
                 }
             }
         });
@@ -30,12 +47,7 @@ define([
             var unsubscribedProduct = $(this).closest('og-offer').attr("product");
             $.cookie('product_subscribed_' + unsubscribedProduct, false);
             if (window.location.href.indexOf("checkout") > -1) {
-                var sections = ['cart'];
-                
-                customerData.reload(sections, true);
-                if (e.target.closest("og-offer").getAttribute("location") === "cart") {
-                    totalsDefaultProvider.estimateTotals(quote.shippingAddress());
-                }
+                estimateTotals(e);
             }
         });
     });