I'm on a similar plan, and it is working (slowly)
Breakfast 200 cal - porridge, or boiled egg and slice of toast, Greek yoghurt a raspberries, slice toast and table spoon of peanut butter
Lunch 200 cal - broth type soup, salad from subway, single slice of bread sandwich with chicken
Dinner - same as family type meal, but I weigh and count everything so its 800 cal, easy wins are reducing the oil and switching anything carby for salad, skipping out the cheese.
10,000 steps did NOTHING for me, I've started couch to 5k instead and that has been brilliant - feel so much better and look forward to runs.
Most weeks I only lose 0.1 kg, but then at week 3 I lose a massive 0.8, so it isn't consistent at all! But I keep the faith, I've taken 20 years putting this weight on, and realistically its going to take a year to get it off.