I suggest you to eat frequent small meals and eat more
of green leafy vegetables, fruits and protein and less
of fats, butter and potato etc. Drink lots of water and consume fruits rich in vitamin C as it is a fat burner. Get a diet chart made from a nutritionist. Indulge in aerobic exercises, dancing, brisk walking or jogging. This will help in burning calories faster. A calculative and disciplined approach will be helpful. Hope this helps.
Take care and regards!