As mentioned in @ error2007, iframing AWS UI will not work. You can upload CloudWatch data to your own database using the CloudWatch API, which gives you statistics and the ability to store data for more than 2 weeks.
One solution you can try is AWS at the Axibase Time Series Database , where we tried to simplify the process of moving data with minimal latency using markers. You just need to create a read-only account to retrieve data from the CloudWatch API at several regional endpoints.
EC2 dashboard example:

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