You are the same size as I was and Noom put me on a 1400 calorie diet. It was hard at first to cut out all the goodies but I lost 25 pounds over about 5 months. I quit Noom bc now I know how to eat. I also work out almost everyday. So I think your goal of 2100 calories is too much. But everyone is different of course.
Missing quite a few components. What’s your maintenance cals? Why so much protein? Unless you’re enhanced there is no need to go above 1 gram per lb on protein. And just take 200-500 cals off your maintenance to start your cut.
I like to use this to calculate calories. This is easy and you seem to use it already. Keep in mind that the daily activity level should not take into account your gym sessions.
But it’s more complicated. It sounds like you already know something about calories in calories out and all that stuff, so maybe we need to work on the details. Have you already been on a diet that worked and now you feel like you’re in a plateau? Or do you just feel like there’s some stubborn fat areas and you’d like to go to a lower BF percentage? How many calories are you eating right now and how does that work for you? Are you sure you’re eating the amount of calories you think you are or you’re just intuitive eating and feel like there’s no results?
If you workout 5x/week I assume you’d like to preserve muscle or even maximise muscle growth, and that is going to make your job more difficult, because if you want to grow muscle it’s harder on a deficit.
Resistance training or cardio? Do you increase the weight you’re using or maybe the exercises are always on the same level? If you have lost 10% of your initial weight, you can go into some sort of metabolic adaptation, of around 250kcal/day(not great, not terrible kind of situation), that can slow down your progress, especially if your training level is the same. Increase you daily activity, 10k steps maybe if you have time. Also, maybe you need a diet break from time to time. The weight loss process isn’t stopping, it’s just slower. Give yourself time.
What I’m saying is: you need protein, for sure, especially high quality protein, to hit the leucine threshold per meal. Make sure you get around 2.5 g leucine/meal, to maximise muscle protein synthesis. Empirically, I’d suggest more meals per day, research shows it can help with muscle growth. Also, protein has its ways to help with weight loss too. You are right to go for a high protein option, if you have no health issues. But maybe 2g/kg would be enough. It’s already a hard target to reach, don’t make your life that difficult. Don’t be afraid to go for a bulk, if you ask me. Work those muscles, and if you don’t eat an excessive amount of calories over your target, you won’t get fat, you’ll look lean and that little fat won’t be such an issue, trust me.
Some targets sound very good but they require really difficult work and if you are not an athlete, bodybuilder or interested in making weight for a competition, you just need to be flexible about your diet, to eat healthy, to exercise-preferably resistance training, and to keep your head in the game. There will be progress, don’t rush it.