Since You’ve Been Counting Macros For So Long, What Strategies Do You Recommend?
Learn to read a food label, and use an app on your phone to track the food. The apps make it very easy and most come with a barcode scanner, so you have the nutritional information right at your fingertips.
I think flexible dieting is a great thing for everyone to try at least for a little while. In doing so, you start learning what a serving size looks like. You also begin to understand the macronutrient composition of foods.
I have been doing it long enough that I can look at most food items and more or less know their serving size and the macronutrient makeup. That knowledge can help anyone trying to lose weight.