How long does it take to fully complete the CAEC?

Hey all, I’m 17 looking to get my education in some way. I messed up pretty badly in my first years of high school and later decided to just fully leave.

Im wondering how long does the CAEC take from start to finish to fully complete and get the certificate. I want to join the CAF, and I’m going to be 18 next month and am honestly looking for the quickest way possible to get into the CAF.

I’m from Ontario, not sure if that makes any difference.

Thanks all :)