Question 001: Weight Loss

I have my first sparring competition in one month, I was wondering if it would be good to go on a diet now and try to lose a couple of pounds, I really don't eat out of control, but I eat whatever I want. Just a little history about myself. When I started TKD I weighed about 285 lbs, I've weighed myself now and come in at 230 lbs at 6'3", but I was curious what you did before competition to get yourself in fighting shape. I have added another class recently and now I'm in the process of becoming an instructor, so it's not like I don't come to class, I actually go about eight times per week. I assist my instructor with the first class then participate in the advanced class right after so I do get a pretty good workout, I just want to do a little bit extra and lose a couple of more pounds before the competition.