When you had tones of weight to lose you probably saw great numbers on your scale, but now things have slowed down. Now before you start feeling bad about yourself, this is completely normal. As you get closer to your goal weight it should be come hard to get those big numbers each week.
In many cases if you even attempt to create a calorie deficit to keep these high weekly losses you can completely stall your weight loss. Below is some helpful guidelines for how much weight you should attempt to lose based on how many lbs you have to lose:
If you have 75+ lbs to lose 2 lbs/week is ideal
If you have 40-75 lbs to lose 1.5 lbs/week is ideal
If you have 25-40 lbs to lose 1 lbs/week is ideal
If you have 15 -25 lbs to lose 0.5 to 1.0 lbs/week is ideal
If you have less than 15 lbs to lose 0.5 lbs/week is ideal
For the math people out there the recommendations roughly go by avoiding losing more than 1% per week to help your body from freaking out and going into starvation mode which can lower your metabolism and stall your weight loss.