As long as you're eating and exercising in a healthy way, then you're not doing anything 'wrong'. It's just that after the water weight is all gone..then the hardest part begins to happen..and that's fat loss. At this point, then 1-2 pounds a week is the new average per week.
Keep in mind, though, men have an easier time with losing weight, than women do, because of more muscle and the lack of hormone fluctuations. So there's no reason to rush the process...you'll be there before you know it!