Try to avoid mixing too many different foods in the stomach. A sweet fruit digest fine with one or two other sweet fruits but generally not with meat or vegetables. Veggies (including tomatoes and avocados which are botanically fruits) digest fine together. Avoid mixing different animal foods in the same meal : if you eat wild boar, don't eat beef, fish or eggs at the same meal.
If you eat nuts, choose the kind you like best at the moment. If it is hazelnuts for example, don't eat pecans or walnuts at the same meal. If your still hungry after the nuts, you can choose a vegetable or two.
The more different foods you ingest at the same meal the more difficult your digestion work will be.
PS: Sorry, I failed to notice this is in "Carnivorous - Zero Carb" section, then not for me!