Get your salt, and Janet's suggestion of broth worked really well for me.

It sounds like you are eating to satiety even though it may be less than the quantity you used to eat normally. If you're not hungry, don't force it. If you are, eat to satiety. Sometimes the differences in quantity in the beginning are confusing, but it sounds like your body's signals are accurate. Not completely sure what you mean by "struggle." Is it that you don't like the type of food, or that you eat but can't eat to quantity. If you don't care for the type of food, there are many low carb options that can be substituted. If you're just experiencing fullness, don't worry, it will adjust over time, and you may find you're satisfied with less by eating this way.