If you smoke once a month and you need enough for 2 weeks I'm going to assume you only need to get high once. Yes, that is enough to get high once. You could very likely get high several more times if you smoke it in an efficient manner. Rolling it into a tobacco spliff might get you high once - smoking off a screen in a tiny pipe likely more times.
Smaller the pipe the better with hash/extracts - i would advise against the hookah.