I'm 2+ years out. I've lost 95% of my excess weight. I have not had plastics - which would account for that last 5%. I eat a high protein, low carb diet and exercise 7 days a week. I eat roughly 1500 calories a day. I exercise at least 1 hour each day. A typical day is:
Morning - coffee - black, greek yogurt (Skyr Icelandic provisions), 2 tablespoons of granola
Mid morning - protein shake (1 cup fairlife skim milk, 1 scoop protein, handful frozen fruit in blender)
Lunch - 3-5 ounces of chicken/turkey/beef, 2 cups of green salad mix, 1 tablespoon balsamic dressing
mid afternoon - 2-3 ounces cheddar or other hard cheese
Dinner - 3-5 ounces meat, salad or green veg and 1/4 c of a starch.
I have had to increase my carbs to about 110 g daily due to my exercise load. I fence (en garde) 6-8 hours a week, do Cross Fit 3 hours a week and pilates and strength training another 1-3 hours a week. I eat about 110 g protein daily. I eat protein first. I drink close to a gallon of water a day.
If I want a glass of wine or a cocktail, I have one. At my high point, I was over 300. I now sit around 152 with 29% bodyfat. I can deadlift 250 pounds and squat 235. I'm nationally ranked as a fencer in my age group.
How well you do it up to you and your commitment to it. I've gone from a size 24 to a size 6.