Part of the problem with sticking precisely to a macro count and calorie amount is that it’s really impossible to accurately predict what an individual’s daily caloric needs are. Whatever a calculator tells you is just a guesstimate of your needs. And in particular a calorie isn’t the same when they come from different macronutrients. A sugar calorie is much different from a protein or fat calorie. Your daily caloric needs vary day to day, minute to minute. It’s an ongoing calculus equation that your metabolism is engaged in constantly. As @Ilana_Rose says “some days I eat 800 and some days 1800”. I recommend shooting for calculated macros especially when people are chronically under eating, but also listening to your body when you’re loosing weight and things are working correctly.
I realize there’s a lot of people who obsess over scale numbers, get depressed if it doesn’t move, and fall off track because of non progress. There’s a lot of “my scale is a liar” comments here. People seem to hate their scale when they don’t loose, and love it when they do. But I find daily weigh ins motivating and helpful for making food choices and weeding out what’s not working. If I go up 5 pounds I know it’s temporary and I look at what I have been eating and decide what was indulgent and what it was I didn’t really need. It’s just a tool, not a thing trying to undermine your progress. I enjoy tracking and weighing in every morning. The records I have are inspiring when I feel progress has been slow and I need a good self inflicted kick in my butt to analyze how I can do better. I think if I went three months without weighing in I would go through more stress if I found a three month period had passed without change. That would be very frustrating for me and make me feel if I had been paying more attention to what I was doing things could have been way better. Just me though, I know how my brain works. 
