Below are a couple articles explaining the Zone Diet and how to determine how much to eat. The first article is from the CrossFit journal and it contains some recipes for snacks and meals ranging from one to five blocks.
https://library.crossfit.com/free/pdf/CFJ_2015_05_Zone6.pdfhttps://zonediet.com/resources/food-blocks/
https://journal.crossfit.com/article/nutrition-brief-how-much-food-should-i-eat
For the first few weeks, we recommend keeping track of your food intake with a journal. It will help ensure that are meeting the necessary macronutrient percentages based on your body type and activity load. Here is blank copy of a daily journal.