Yours should not be that long because your eligibility is already completed. Can you share the exact wording of your letter.
This refers to the Application for Permanent Residence you made under the Spouse or Common-
Law Partner in Canada Class.
it has been determined that you meet the eligibility requirements to apply for permanent residence
as a member of the spouse or common-law partner in Canada class. Please note that a final
decision will not be made until all remaining requirements for becoming a permanent resident
have been met. These requirements include medical, security and background checks for you
and, if applicable, all of your family members, both in Canada and abroad, even if they are not
applying to join you in Canada at this time. You cannot become a permanent resident until, you
and all your family members have met these requirements.
IMPORTANT: Passports for yourself and your family members must be valid for the duration of
your stay in Canada. If you or your family member(s) have updated your passport, please submit
copy of your new passport as soon as possible.