Metabolism return back to normal?

So for a couple of months I ate about 800-1000 calories and before these months I ate about 1800 calories. I understand that the body will go into starvation mode, and I began eating 1800 calories for about 1 month and a half again and now down to 1500 to prevent weight gain. Will my metabolism adjust to the 1500 calories, or will it reset itself back to the 1800 calories I used to have? I used to weigh 114 pounds at 4'11 and now i weigh 93 pounds.