I agree that 2 boiled eggs might be more filling. Or you could poach a couple of eggs and have them with cooked tomatoes and mushrooms.
Could you make porridge the night before and re-heat it in the microwave at breakfast time ?
Could you make your own salad with salad leaves, chopped avocado, chicken, cucumber etc ?
Make your own coleslaw with sliced onion, grated carrot and shredded white cabbage, two tablespoons of mayonnaise and two tablespoons of full fat yoghurt. Mix in some chopped celery and chopped spring onions for extra crunch. Grate 50g of full fat strong cheddar in and mix it up to make cheesy coleslaw.
Have full fat Greek yoghurt after lunch with some berries of your choice mixed in. Crush the berries a little bit as you mix them in to release their juice and flavour your yoghurt even more.
Be flexible about your calories. I wonder if 1600 calories per day is enough ? Have 2000 calories one day. 1950 calories the next day. 1900 calories the next day until you get to 1600 calories.
If your daily calories are to low your body could hit the, 'starvation response' i.e. your body thinks there's a famine on and will not let go of a single calorie.
You might get fed up with being hungry and chuck the diet in altogether.