Weight can also be affected by the type of weight you are losing. In the beginning, it's common to lose weight faster because you're losing body water, stored carbs (muscle glycogen), etc. At 10 months into a diet, you're likely to be losing mostly fat, but a pound of fat contains more calories and takes longer to lose than muscle, water, and other things. But after the first phase, calories you lose is by the depreciation of fat. Fat is lighter than water and carbs. So, losing them will not have much effect on weight loss.
Another possible reason is that you have lost muscle weights. Muscles are consumers of energy. As the muscle mass reduces, energy consumption reduces. This results in a reduction in energy consumption, which translates to less weight loss.
Last but not least, you might have changed your food preferences from the last 11 months. While you started you might be more careful in selecting foods. But now, it might be changed. So, recheck your food preferences and plan a new diet plan with the help of your dietician.
Better go with some more exercises than cutting down on your food. This will add to your body build-up and can help in burning calories. You will be resulted with a body of shape and strength also.
Hope this is informative enough for you. Stay healthy.