1. Forget the protein thing.
Roughly simultaneously with your declaration that you’re cutting back on meat, someone will ask “How are you going to get enough protein?” The answer is “by being omnivorous.” Plants have protein, too; in fact, per calorie, many plants have more protein than meat. (For example, a cheeseburger contains 14.57 grams of protein in 286 calories, or about .05 grams of protein per calorie; a serving of spinach has 2.97 grams of protein in 23 calories, or .12 grams of protein per calorie; lentils have .07 grams per calorie.) By eating a variety, you can get all essential amino acids.
You also don’t have to eat the national average of a half-pound of meat a day to get enough protein. On average, Americans eat about twice as much as the 56 grams of daily protein recommended by the United States Department of Agriculture (a guideline that some nutritionists think is too high). For anyone eating a well-balanced diet, protein is probably not an issue.