Unfortunately, we can't really expect any certain amount of weight lost each week. Not only does it vary from week to week, but it varies from person to person. Generally speaking "1 - 2lbs" is said frequently as a maximum amount that can be healthfully lost each week. A lot of people tend to fall in that range. But remember it's an average. It might mean you'd lose 3 pounds one week and .2 the next. Or you might even gain .8, but lose 2lbs the following WI.
Sorry I can't give a straight forward answer! The answer just happens to be, well, not that straight forward!
It's not only about weight lost either, but health gained. Stick with it no matter what the scale is saying
Best of success!!