Ok, where are you now then? Height, weight, %bf, goal? Have you
checked your morning temp recently (before you get up and move around
is best)? Blood pressure?

I'm at the point where I eat 1200 kcals/day AND do 500 kcals of cardio
a day AND only lose a pound or so a week. Some folks just have a hard
time at this point, you may be one of them. There are things you can
do to get past this point, but you have to try a few things to find
out what they are.

The first step, assuming you're willing to try something new, is to
find your maintenance level and "normalize" your diet. Higher carbs
(isocaloric if you can) at maintenance cals (14-16x lbm) for two
weeks. This should reset any diet-related metabolic stuff.

Next, "a change is as good as a vacation." Something like a CKD or
UD2 carb-up, or a high-calorie fat "fast", or even just a "food-up",
might kick-start your metabolism again. Some folks have to carb-up
regularly to keep their metabolism going, others just need to food-up.

Another option is to just wait. Eat at maintenance, worrying only
about not gaining, and let your body rest at its current weight for a
month or so. Then resume dieting and see what happens.