Every one loses at their own rate. There is no right or wrong amount of weight to lose each week. Yes, there may be average amounts of loss people who are similar height, weight, age, gender, etc. may have in common. As long as you see the trend of your weight loss going down you’re succeeding. The amount you lose each week will also slow as you progress.
It is possible you are experiencing a stall as has been suggested. These are extremely common. We talk about the three week stall but that first one can happen at week 2, 3, 4, 5 …. It’s just your body taking a breath & trying to catch up with the changes (surgery, weight loss, reduced calories, dietary changes,…). You will likely have other stalls as you’re losing.
We’ve all been on that gain, lose, gain roller coaster. Personally I know the reason I always regained after losing was because the diets I was on weren’t sustainable or I just went back to the same old way of eating. I’d start regaining a couple of weeks after the diet ended. The difference this time is that I work at sticking to the changes I made to how I eat, what I eat, why I eat every day. I have many years ahead of me but I’m going to work my butt off to try to stay my course cause that desire to go down my old path is always there. I just understand it & manage it better now.
Your success starts & ends in your head. It’s not just what you put in your mouth. You have to do the head work. Many do this with the help of a therapist, others do it themselves. There are lots of people here who are happy to share experiences & offer support.
Follow your plan, meet your protein goals, get your fluids in, be more active and your weight loss will continue. You’ll get there.