Hi
I recommended to lose 2-4 kg in a month. By doing strict balanced diet & cardio exercise for 30-45 mins. Wt loss is depends upon your metabolism, calorie intake, etc. Try to increase ur metabolism to burn the calories fast & helps to reduce the wt fast.
Some of tips to increase metabolism:
Drink plenty of water- 2 to 3 liters in a day.
Drink green tea twice in a day.
Include plenty of fibers foods like fruits, vegetables, whole grains.
Exercise is one best way to improves your metabolism.