diff --git a/README.md b/README.md
index 4ae3b7b..5d83e21 100644
--- a/README.md
+++ b/README.md
@@ -126,6 +126,9 @@ If your site has a [Content Security Policy](https://developer.mozilla.org/en-US
 2. If you're loading the widget from the UNPKG CDN (i.e. for sites without NPM), ensure UNPKG is a valid source in `<script>` elements.
     - Example: add `"https://unpkg.com"` to the `script-src` or `script-src-elem` directive of the CSP.
 
+### Testing during development
+
+When checking that your implementation is working, don't rely solely on the shared Looker Dashboard because the pipeline from Google Sheets to Looker can be very delayed. Instead, look for an `HTTP 200` response containing `{message: "Success", feedbackId: number}`. If you need, the OOI Platform team can verify the `feedbackId` is valid.
 
 ## [FOR DEVELOPERS] How to improve this component