IoT Core CloudWatch rule

Hi,

We're going to store IoT things/devices logs in CloudWatch, so we've created an IoT rule to store messages from dedicated topic into CloudWatch. Every time the rule is triggered a new CloudWatch stream is created. It has a name in form of "<RULE_NAME>-123456789". It seems that it will be thousands or millions of streams created. Is it expected behavior? Doesn't look like really convenient for usage. Is it possible to store logs using stream-per-device design? Or maybe another approach for structuring device logs in CloudWatch?

BR