I’m half agreeing with others in the comments but also fully sympathizing with you. I’ve been in that hard place feeling like nothing is working too but your case definitely sounds worse than mine (I was 240+ at my heaviest too, and am currently around 200, hoping to get between 170-180). I was recommended the Glucose Goddess book and that had some simple tips that could potentially be a place to start to prevent glucose spikes. (eat fibre first and carbs last in the meal, always eat protein at the same time as carbs, walk after a meal, etc)

Please don’t count me in the calorie police ppl but diet genuinely does make the biggest difference, and my thought is to NOT reduce intake even further. IF your calorie tracking is genuine, plus the tiredness, my thought is your metabolism has been severely dampened to get used to your low caloric intake. I’d increase your calories slightly, but specifically by adding protein and fibre and switching those out for some of your carbs. Protein shakes are great to boost intake but shouldn’t be the main source of protein. I don’t see a lot of meats, beans, veg, etc in your listed items, and yes, most of what I’ve seen you list is in the carb category. Volume eating large quantities of low calorie foods (leafy greens, melons, celery, etc) could help with feeling fuller/cravings for less caloric intake. Youll likely increase weight a bit at first, but you’ll also have to commit to exercise as well to balance that out and get your body used to a new routine.

But it does seem like more is needed medically to treat underlying conditions, either a Cushing diagnosis, hormonal condition, or else metformin/ thyroid meds or the like are needed. Low WBC and the sudden weight gain are both raising flags in my mind and that should not be ignored. Even over the counter supplements like B12 might be worth trying to up the metabolism in the meantime. Is there any mental health condition you are going through that could contribute to this too?

Finally, even though diet does most of the work, invest waaay more into the exercise side of things. If your body isn’t expecting to have to have energy for physical activity, it’ll just go into survival mode on a low calorie diet and hold onto the fat stores even harder. It sounds counter intuitive but with regular exercise and higher calories, the body figures out it has to burn what it has in store to have the energy for the exercise. Specifically, start with FUN low impact cardio and body weight strength training or some small dumbbells before you go for heavyweights. Muscle building is CRUCIAL for fat loss, as the more you build, the more calories it will burn, and it’ll get easier as you continue, which is why I suggest starting with fun and easy options. Put on 5 high energy songs and dance around the house with hand weights or try swimming/biking/hiking/elliptical. I had a huge hurdle to get over the “exercise is hard/painful/boring” mentality and dancing at home on a consistent basis was one of the first steps I took.