If it were me, I would phase out Primal. Concentrate on meat, bones, and organs and feed ground only occasionally .... like maybe 2 or 3 times a week. Gradually add in a little more variety. Deer meat is wonderful ... get as much of that as you can.
Don't worry about exact weights of each meal. Learn what a meal looks like and feed that. If a dog starts getting heavy, feed less and vice versa.
You are doing good. It will soon be second nature to you. It will soon become just the way to feed a dog. :smile:
Also, don't worry a lot about "doing it right". There is no right and wrong way as long as you feed meat, bones, and organs from a variety of animals. Moslty meat, some bone, and some organs. You won't find any two people that feed exactly the same way. Everyone has his own little quirks.
Some feed veggies, some don't. Some give supplements, some don't. We all have one thing in common ... our dogs are healthy.