I don't think he will be able to learn sub defense in that time. That being said if for some reason Mir does get by Nog i don't think he will have the boxing/wrestling to catch Lesnar in a sub real easy like alst time. Good chance lesnar with the experience he has now could just overwelm mir. Nog is another story, and will sub brock in rd 2
learned long ago MMA may be a sport but the UFC is a business.