Connect to DAX cluster using dynamoose (nodejs)

Question

I am trying to connect to dax cluster from my node application

// Set document client to use dax cluster
var daxClient = null;

dynamoose.AWS.config.update({
    region: 'us-east-1'
});

var dax = new AmazonDaxClient({
    endpoints: [nconf.get('daxendpoint')],
    region: 'us-east-1'
});

daxClient = new dynamoose.AWS.DynamoDB.DocumentClient({ service: dax });
dynamoose.setDocumentClient(daxClient);

However, as per DAX Cluster metrics, looks like the connection is temporary:

The application is still directly reading from the dynamoDB table and not via DAX. Any idea why?