It's possible, but you'll have to be very diligent. That's 27 pounds and only 2.5 months to lose it... that means you'll have to lose more than 10 lbs/month. If you're anything like me, I've lost and gained the same 10 pounds, at least, monthly over the past few years.
My first question is whether or not you have any medical issues, such as hypothyroidism, insulin resistance, etc that might make it more difficult to lose that much weight in so short a time. I've struggled with losing 23 pounds for well over a year and I can't get it off. I do have both hypothyroidism and insulin resistance.