Vaia,
U may send a CSE, but no need to wait for their reply if they takes over a week....Just send below docs....It will suffice....
Forms:
1. Cover Letter stating ur changes
2. Generic App form- Principal applicant
3. Schedule A - Background declaration -spouse
4. Additional Family info- Spouse
5. Supplementary -Travels- Principal applicant
6. Fee payment
7. Doc checklist
8. 15-20 marriage Photos
DOCUMENTS
1. Photo-6 copy with 5 copy written name
2. 550 CAD
3. Birth Certificate
4. Passport- Spouse
5. Marriage Certificate
6. Nikahnama (English ver)
7.Settlement fund ( CAD: $13,837 for two person)-Bank cert+Statement
8. Police clearance certificate-Spouse
9. All educational docs- spouse (though checklist does not indicate those but recently SGVO asking this to several applicant)
Courier those hard copy docs to ur VO address:
IMMIGRATION SECTION
HIGH COMMISSION OF CANADA
One George Street #11-01,
SINGAPORE 049145
Dont worry they will not send u any acknowledgement,will update directly to ur file.