diff --git a/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit-multiple-sites.tentative.https.sub.html b/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit-multiple-sites.tentative.https.sub.html
index b71c368704bb..bc27ccae4851 100644
--- a/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit-multiple-sites.tentative.https.sub.html
+++ b/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit-multiple-sites.tentative.https.sub.html
@@ -11,14 +11,9 @@
 <script>
 'use strict';
 
-function getCrossSiteURL(url) {
-  return new URL(url.toString().replace(location.origin,
-                                        get_host_info().HTTPS_NOTSAMESITE_ORIGIN));
-}
-
 promise_test(async () => {
   const ancestorKey = token();
-  const perOriginBitLimit = 6;
+  const perOriginBitLimit = 3;
   const bitsKey = "bits";
 
   let url0 = generateURL(
@@ -26,7 +21,7 @@ promise_test(async () => {
         "resources/run-url-selection-operation-limit-inner.https.html",
       [ancestorKey]);
 
-  // The per site per pageload limit is 6 bits.
+  // We have set the per site per pageload limit to 3 bits.
   url0.searchParams.append(bitsKey, perOriginBitLimit.toString());
   attachIFrame(url0);
   const result0 = await nextValueFromServer(ancestorKey);
@@ -38,9 +33,10 @@ promise_test(async () => {
       [ancestorKey]);
 
   // The overall pageload budget should have 3 bits remaining, as we have set
-  // it to start at 9.
+  // it to start at 6.
   url1.searchParams.append(bitsKey, "3");
-  url1 = getCrossSiteURL(url1);
+  const crossOrigin1 = get_host_info().HTTPS_NOTSAMESITE_ORIGIN;
+  url1 = updateUrlToUseNewOrigin(url1, crossOrigin1);
   attachIFrame(url1);
   const result1 = await nextValueFromServer(ancestorKey);
   assert_equals(result1, "run_url_selection_limit_inner_succeeded");
@@ -50,11 +46,12 @@ promise_test(async () => {
         "resources/run-url-selection-operation-limit-inner.https.html",
       [ancestorKey]);
 
-  // Since the overall per pageload limit is 9 bits here, it should have
+  // Since the overall per pageload limit is 6 bits here, it should have
   // already been reached, even though `url2`'s site should have 3 bits
-  // remaining in the per-site budget, since it is same-site with `url1`.
+  // remaining in the per-site budget.
   url2.searchParams.append(bitsKey, "0");
-  url2 = getCrossSiteURL(url2);
+  const crossOrigin2 = get_host_info().OTHER_ORIGIN;
+  url2 = updateUrlToUseNewOrigin(url2, crossOrigin2);
   attachIFrame(url2);
   const result2 = await nextValueFromServer(ancestorKey);
   assert_equals(result2, "run_url_selection_limit_inner_succeeded");
diff --git a/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit.tentative.https.sub.html b/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit.tentative.https.sub.html
index b8f8d5a4bf00..5989aa160bc9 100644
--- a/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit.tentative.https.sub.html
+++ b/testing/web-platform/tests/shared-storage-selecturl-limit/run-url-selection-operation-limit.tentative.https.sub.html
@@ -12,7 +12,7 @@
 
 promise_test(async () => {
   const ancestorKey = token();
-  const perOriginBitLimit = 6;
+  const perOriginBitLimit = 3;
   const numUrls = 8;
   const urls = generateUrls(numUrls, "/shared-storage/resources/frame",
                             [ancestorKey]);
diff --git a/testing/web-platform/tests/shared-storage-selecturl-limit/select-url-limit-multiple-worklets.tentative.https.sub.html b/testing/web-platform/tests/shared-storage-selecturl-limit/select-url-limit-multiple-worklets.tentative.https.sub.html
index c0eedc6f5fa5..62cbe7a90ffa 100644
--- a/testing/web-platform/tests/shared-storage-selecturl-limit/select-url-limit-multiple-worklets.tentative.https.sub.html
+++ b/testing/web-platform/tests/shared-storage-selecturl-limit/select-url-limit-multiple-worklets.tentative.https.sub.html
@@ -12,7 +12,7 @@
 
 promise_test(async () => {
   const ancestorKey = token();
-  const perOriginBitLimit = 6;
+  const perOriginBitLimit = 3;
   const numUrls = 8;
   const urls = generateUrls(numUrls, "/shared-storage/resources/frame",
                             [ancestorKey]);