Family Class Sponsorship- CHC Islamabad

The process was started on Nov 28, 2006 and my family went through with medical formalities in month of October 2008, after that we did not hear anything from CHC ISB, so I sent an email to them.
I got reply back from CHC ISB stating that a letter was sent to us in Karachi-Pakistan on December 02 2008, which we never received, anyway they asked me to send proof of relationship and Right of Permanent Residence Fee (RPRF)

I made the payment for RPRF and the family sent the proof of relationship along with receipt of payment for (RPRF), however I missed place my Birth Certificate, so instead I sent copy of high school certificate along with copy of Pakistan ID card
My questions are:
1- How long should I wait to send an email to CHC ISB for update?
2- Is high school certificate enough to show my relationship with father?

I would appreciate if someone can help me with this inquiry, thanks