Thank you for the response.
1. Your Site Health information. You can use this form to share privately if preferred.
I submitted my info via the form.
2. Did you notice this resource limit previously or did this just start to occur recently?
The 508 error comes when the Site Kit plugin is activated.
3. Have you tried disconnecting any of the connected modules or checked for the same by temporarily deactivating any other third party plugins?
I tried disabling all the plugins except Site kit and enabling the default WP theme, but still the same.