I understand your concern. Would like to know more details about your lifestyle and health status. Only this much information won't help us much to give you a detailed plan. Firstly you start to avoid sweets, deep fried items, too much of junk n outside food. Have seasonal fruits n veggies. Drink lots of water.

Hello, do some regular physical activity of your choice to burn at least 500 calories daily to reduce 5 kg every month. Beside this cut down your calories from food by avoiding high fat,high carbs,high calorie foods and avoid carbs in dinner as well as restrict during the days also. Keep proper hydration. Sleep well to make yourself stressfree and help hormonal balance.