Most people see an initial drop and then, after a couple of weeks, it will even off as your body gets used to the new regimen. That's when you have to change things up to get your body losing again.
Some folks are content to let it happen at 1 or 2 pounds a week, and if you are good on your diet, it will happen.
But others, like me, insist on more... (I am so impatient) so I am switching things up often, to keep my body from settling into a routine.
The two constants I don't mess with are a low calorie diet and exercise, but the frequency of exercise, the duration and the type of exercise, the meal schedules... these are all things you can experiment with to see where you lose the best.
Remember also, that weight loss is just a small part of the battle. The real test of your commitment comes when it is time to KEEP the weight off. The only way to really lose weight for good is to commit yourself to a change in lifestyle.