Hi ma'am as per your height your weight should be between 52 - 55 kgs. So you need to reduce weight by 8 - 10 kgs.
You can reduce by following low calorie balance diet along with moderate exercise like walking or yoga for at least 40 - 45 mins.
Next Steps
You can consult me for detail diet plan via consult direct or through online.
Health Tips
Avoid fried foods, refined maids products and other process foods.