1-2 lbs a week is healthy and achievable.
As for method, I recommend downloading the app called 'myfitnesspal' and logging your food through it. It will help keep your calorie count at a good level to achieve your goal. Also make sure you are having exercise with this, take care that you are not drinking the calories instead, and you will be successful. It helped me and my family like nothing else so it is very recommended.
Calorie counts are more important than what you types of food you eat exactly (though to be healthy that is important too!)
Good luck!