I will setup google instant indexing API with Rankmath in WordPress

Google's Instant Indexing API lets you add content to Google's search index more quickly. The API uses a push mechanism, meaning that you can push new content to Google as soon as it's published on your site.

The Instant Indexing API is available to all WordPress users, and it's easy to set up. Just install the plugin and connect it to your Google account. Once you've done that, you can start pushing your content to Google immediately.

You will get:

1. Setup Google Indexing API with Your WP site.
2. Setup Google API with Webmaster Tools
3. One-time Setup
4. Manual Submissions

So, why are you still waiting?