So why don't you leave where you are now if it is Nigeria I believe and you and your spouse should do this thing....both of you should email the Accra office ACCRAIMMIGRATION@international.gc.ca and webform for a change of address so you come to ghana and when ready the call you from there.....I'm a Ghanaian
Your spouse must put in the webform all your file number, UCI, receipt if he has it, your name and new change of address, date of birth etc....they will work on change of address fast so you come live in ghana while you wait for them