Have you tried replacing by volume? E.g. fill your stomach with a large salad (which can include some meat if necessary). And if you get hungry in 45 minutes, j

Have you tried replacing by volume? E.g. fill your stomach with a large salad (which can include some meat if necessary). And if you get hungry in 45 minutes, just eat more salad? You may also find that cutting out carby/starchy food will make you less hungry (once you get past the initial withdrawal symptoms), as long as you keep your stomach "satiated by volume" with low calorie/high nutrient food. Another trick is to try splitting that sandwich in two and eating the second half after 45 minutes (when you get hungry again).