AWS CloudWatch metrics to OpenSearch

Question

I'm working on Centralized Logging of my environnement AWS presented in this guide:https://docs.aws.amazon.com/solutions/latest/centralized-logging/overview.html

I'm using the same architecture as presented in AWS Doc.

I'm searching the possibility to send metrics from CloudWatch of each account to OpenSearch in centralized account. I was thinking of a Lambda function that retrieves each X minutes the data with get_metric_data ? I'm collecting the metrics with CloudWatch Agent

Is there an another method to do it ?

Thank you