Enable authentication to AWS using EC2 instance role in Infinity plugin

I’m trying to connect the infinity data plugin to AWS. The documentation mentions creating a new service user in AWS with programmatic access and using those credentials in the plugin. I do not want to create another user in AWS for this purpose. Instead, is there any way to configure the Infinity plugin to use the EC2 instance role using the sigV4 authentication? I have enabled sigV4 auth in the config and was able to connect to AWS OpenSearch using the instance role. Is it possible to do the same with Infinity plugin
Any help will be greatly appreciated!