The present invention discloses methods and systems for monitoring a network connected device by a monitoring server. The monitoring server sends notifications to the network connected device periodically according to a time interval. The time interval is set to a normal value and the notifications include a request for the monitoring data. Then the network connected device sends the monitoring data to monitoring server upon receiving the notifications. Monitoring server receives and stores the monitoring data from the network connected device. When one condition is satisfied, the time interval is changed to a lower value. Therefore, the frequency of sending notifications to network connected device from monitoring server is changed.