Hi J...I've done both ways now. With my first, I quit "cold turkey" at 11.5 months. Literally, I left for basic training after college. I was worried with her b/c she still wasn't very interested in food. I took about a whole day for her to get hungry enough to try eating. But, she lived. I still feel really guilty about it, though.
With my second, who was weaned at 15 months and an excellent eater of table food, I gradually reduced feedings. It seemed that she needed to nurse more at night. So, the last week, I'd just have one nightly feeding. Since I was 4+ months pregnant, my production was down. So, I was not engorged that time.
It's one of those things that is hard to plan ahead. I'd wait and see where you are and where she is when February comes. Maybe just nightly feedings until she's adjusted...Or, maybe the new house means a new way & it's sippy cups. Either way, you'll know what to do when the time comes.
Good luck!