Wrote to SINP and received following response..
"If you have submitted documents in response to an SINP request and your online application status states “Waiting on Applicant”, the status will not change until we have received and assessed the new information submitted. If any additional documents or information is required, or once a final decision is made, you will be notified by email."
That means application status won't change until the officer assesses the submitted docs and changes the status.