I just checked and at 2 months, I was down 20.6 lbs from the day of surgery. There's really not a hard and fast rule for how much you'll lose. Everyone is different and it depends on your starting point and how much you lost pre-op, too. I had some months when I lost a lot and other months where I hardly lost anything, but overall it moved steadily downward. My weight loss has stalled for the past month or so, now that I am more than a year out.
The only guidelines I was given was 60g minimum of protein per day and 64oz water. I am now almost 14 months post-op and I've gone from 225 lbs on surgery day (251 was my highest, which was 6 months pre-op) to anywhere from 162-165lbs. My exercise consists of walking and that's it. I'd like to lose another 10 lbs but I'm also pretty fine with where I am as long as I don't gain (which is why I do hope to lose a bit more). I've gone from a size 22 to a size 12. I think I could still lose a bit more if I focused on cutting out some bad habits that have crept in with sweets/simple carbs, and if I increased my daily exercise to something a little more challenging than a walk.
I don't count calories and I don't really track macros at this point, either. I just try to eat reasonable meals that focus on protein and veggies, and not snack too much or eat junk food too often. A typical day is either spinach frittata, Kodiak protein oatmeal, or a Greek yogurt for breakfast, plus a serving of mixed fruit (strawberries, cantaloupe, blueberries, grapes. Lunch is a good size spinach salad with 3oz chicken and some black beans. Dinner might be a bowl of homemade chicken, bean, and veggie soup, chili, or maybe some grilled meat and veggies. Sometimes I eat chickpea pasta with marinara and meatballs but other types of pasta and breads don't settle well. For snacks, I like string cheese and an apple, or some mixed nuts or roasted edamame.
I have to be careful of overindulging in things like popcorn, candy, and cookies because they are too easy to eat without getting full (and sadly I don't get dumping from them). Red meat fills me up very quickly. The hardest thing for me now is dealing with the head hunger that makes me want to reach for food if I am bored or stressed. Getting the stuff out of the house completely is the only strategy that really works for me with that.
My only real advice is don't drive yourself crazy. Just do your best each day and pay attention to your body. That's more important than counting calories. You're not on a diet! You need to figure out what you can sustain for the rest of your life, while paying attention now to the basics (protein and water, plus vitamins) to keep up your health.