There are several possibilities. What do you typically eat?
If you eat plants, some of them contain antinutrients that may cause a stall (lectins, oxalates, isoflavones and more). If you eat carnivore, that may be a problem too – some people don’t get enough fat on carnivore (70% of the calories from fat). For other people protein will work almost like carbs in their body, causing a lot of glucogenesis (conversion of protein to glucose), even though this seems to be rare.
So basically let us know what you’re eating, and we can suggest changes.
For me, I have to cut out nearly all dairy products if I want to lose weight. I’m OK with some butter and cream for my coffee, but no cheese, mascarpone or creme fraiche for me. Just had a 3 month sta;; because I started eating more dairy. Maybe your milk habit is responsible for the stall? I sometimes treat myself to some inulin, a soluble fiber that has no calories but tastes nice. Or replace the milk with a fat bomb like home made chocolate (containing mostly of cacao butter).
I also have to eat a low oxalate diet.