HI,
Please find the link www.cic.gc.ca/english/pdf/kits/forms/IMM5610E.pdf sent all the form that says add dependent
Additional Dependants/Declaration
(IMM 0008DEP
Schedule A: Background/Declaration
(IMM 5669)
Additional Family Information
(IMM 5406)
Also also write a letter to them mention your status changed and want to add with your application.
your AOR is must.