How Much in Volume Should We Eat?

Hi there, Bkfs  I put 4 oz on my plate and seldom finish, although as soon as this weather changes I'll be back to protein shakes.  It's just hard to have a nice cold shake and then go outside to  freeze my  . . . . off. Lunch is 4 oz            Tuna, turkey, cheese, chicken, XXXXLean burger, soup, Ry Krisp Dinner is 5-6 oz        Fish, Chicken, Beef  3-4 oz,       veg 2 oz,  Usually 2 Snacks.    Nuts, cheese, turkey, cottage cheese, once in a while a protein bar. The biggest help my eating will have here real soon is the change in weather.  Then I'll be outside 10-12 hours a day.  Yep, I'm an outdoors kinda gal.