Biggest Loser Contest

I am in a contest with an amazing prize. I started my weigh in at 274 lbs and that was Sept. 14th. Right now I am about the same weight... The contest ends December 7th and I would love to win. Do you think I am able to catch up? I am not sure how many people are participating but I think it would be amazing to win. Any tips and tricks would be appreciated. I am willing to work hard and just started to do T25 but can incooperate more. I am willing to put in the hard work and dedication it just took me a little bit to decide that ;)