Connect a Gatsby Website to Wordpress (only as CMS)

Hello,

I have a Gatsby website that i want to connect to Wordpress. Wordpress will be used ONLY as a CMS.

It's simple connection, i need it urgently.

If you read everything write "READY FOR GATSBY"

The theme installed is: https://flexiblog-medical.netlify.app/
Documentations here: https://elegantstack-docs.netlify.app/flexiblog/getting-started/installation/

Thanks