Here we go grandfatherd!
For breakfast start off with grapefruit juice if you can abide it (no sugar added mind), if not a 100% orange juice, then porridge - this really fills you up for the morning. You can add a spoonful of honey but no jam.
For lunch: A good bowl of soup and a savoury sandwich go down well (ham, cheese, tuna, chicken, beef etc). Check on sugar contents, I make my own soups.
Afternoon: Have a fruit snack with a slice of bread beforehand, of anything other than bananas and grapes.
Dinner: Have either fish (baked in foil?), meat, omelette, with a veg. dish I have a tendancy of making a low-fat gratin but you could open a tin of veg. making sure it doesn't contain sugars. Frozen veg. is best for this. Add pasta, rice, potatoes or just bread if you prefer. For dessert, try greek yoghourt with a bit of fruit.
Home-made cheese scones are a lovely treat and no sugar and little fat.
Hope this helps but just shout if you want some more ideas. Good luck!