Will I lose any weight trying this?

I'm 5'6, and 135 pounds. I am used to being a size 6 but am a size 9 at the moment. I just want to get back to my normal size. I recently moved to Germany and started eating all of these rich European foods. For the next 2 weeks I was going to try a 1000 calorie diet instead of pork & potatoes every night...healthier foods & less portions. Also going to start walking some of the trails around my house...some strenuous, some not. I was just wondering if this will do anything for me or not. I'm not looking for abs, just a flatter tummy & less love handles.