I think I made it even easier for you-
60 ounces a month total= 3 ounces liver, 3 ounces other organ, 6 ounces bone, 60 ounces (or 3.75lb) meat.
You will drive yourself crazy trying to calculate it by meal, and you would need a gram scale! If I were you I would get together what you need for the month then just portion it out into 2oz portions. Some days bonier, some days will be meatier, some days will have organ some wont.