I have until september 21st to master 2 pull-ups....?

I can't do even one pull-up. I have until september 21st to master 2 of them just 2 p my pft. I t'm going to try and do negatives and reverse pull ups every day until that day comes...do I have a chance or is it physically impossible for a human being to master 2 pull ups in this amount of time? I am 5'7'' and I weigh about 195 pounds (yes I am in the DEP program) I wanted to apss my pft so I don't get sent to a PCP so I could graduate in time to spend christmas and new year's eve with my loved ones....Any advice would be greatly appreciated. Starting my training tomorrow...