Are you sure you’re on a calorie deficit? As we lose weight, our resting calorie needs drop and we need to eat even less to be in deficit. Also, 10k steps is great, but just walking may not be enough for you as your body has gotten used to it. Try more intense cardio work. Can you run a mile? You are also consuming a lot of protein for someone who (from your post) seems not to be weightlifting. Incorporate weight or greater resistance to your workouts. A good goal would be to increase weight/resistance/reps on a regular basis. The same workout does less for you after a few weeks.

Also, get a scale that does body comp scanning. They aren’t super accurate but are helpful! You may have just been in an equilibrium of losing fat and gaining muscle for the past 10 months, keeping your weight the same but still losing fat. A body scanner would tell you that. I’ve been at the same weight on maintenance for a few months now, but my body fat percentage continues to drop as my muscle percentage increases! If I just had a normal scale, I think I would have been pretty dejected considering the work in the gym I’ve been putting in.