It
http://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=248&top=28&_ga=2.84698841.178216494.1520288632-1190812179.1480346116
doesn’t really say how many momths but you can click on the link and read yourself. Might that will help you!How long until an inland spousal sponsor can leave travel and leave Canada? is it a 6 months, a year or two?
http://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=248&top=28&_ga=2.84698841.178216494.1520288632-1190812179.1480346116