Don't feel like you have to starve yourself. eating 2x as much healthy, lean food to fuel your body is better than eating 25% of what you normally eat in "regular" food. I'm basically in the same situation. Got to college at 230 dropped to 175 and then I turned that magic 21 and drinking all the time three years later I'm at 250. Getting married in 8 months. Time to get to work.