You aren't hungry because your metabolism has slowed down. Your body isn't burning many calories right now. I would increase your calories by 50 cals per day till you get to around 1600-1800 calories per day. Continue your workouts. STAY OFF THE SCALE!!!!! Your weight may increase by increasing your calories but you have to do this so that your metabolism can catch up.

If you aren't hungry you are going to have to force feed. Make sure you don't supplement these extra calories that you need to eat with high volumes of fat. Increase the healthy proteins, carbs and vegetables. Also increase your fat but watch it.

Tom