I should know better than to discuss medical issues on a chat board, but here it goes (there are a number of diabetics in my family, including my mom, and I'm very sugar-sensitive).
What if you eat half of it and accompany it with a good dose of protein (eggs and sausage/bacon will do the trick). You probably will not need the syrup or compote as it is covered in sugar. Treat it as your special treat for this year and adhere to your normal, healthy diet the rest of your trip.