Update the `flushIntervalInSeconds` field in the logging configuration file.

```json
{
    "awsCloudWatchLoggingPlugin": {
        "enable": true,
        "logGroupName": "<log-group-name>",
        "region": "<region>",
        "localStoreMaxSizeInMB": 1,
        "flushIntervalInSeconds": 120,
        "loggingConstraints": {
            "defaultLogLevel": "ERROR"
        }
    }
}
```