Several factors:
How close are you to your ideal weight? Closer to your goal, weight loss slows down, all loss no matter how small are still a loss
50g carbs may be too much carbs, if in doubt, focus first and foremost on fat - then protein - then carbs. 80% fat-15% protein-5%carbs is a good ratio to aim for. Even the best carb counting can still be out by up to 30%, and hidden carbs, and the fact that around half the entries for food on myfitness pal are wrong!
Add some light exercise (walking, take the stairs etc) - in ketosis/LCHF your body wants to burn fat, give it the excuse to do so.
Stick with it - everyone is different but the body needs time to adapt to this new regime, monthly progress is a better goal.
I started early Jan, yet to plateau but I've found getting enough fat tricky. Double cream, butter, coconut oil, olive oil cheese and similar are the things top of my food list.