We are routing voice interaction events from CXone via EventBridge to a Lambda function for downstream processing. The function hits the concurrency limit immediately during peak hours because the batch size is too high. We have tried increasing the provisioned concurrency but the cost is prohibitive. Is there a way to throttle the EventBridge rule or configure the Lambda event source mapping to handle smaller batches? The error log shows ResourceProvisionedConcurrentExceededException repeatedly.