Do you feel full after a voluminous meal, or a protein and fat meal?
If your answer is "protein and fat", then don't eat protein and fat together without carbs. If you feel full from "volume", eat dense food, protein and fat rich foods, lower fibre carbs. If you don't find fats particularly satiating, add more olive oil to everything you eat, or just knock back a shot of olive oil with a shake at bedtime.