Firstly I would get him off this formula. What you might save on money now you will later spend on meds, hospital stays, allergies, sicknesses, pain and suffering. Either you make ur own
https://www.thehealthyhomeeconomist.com/goats-milk-formula/ (id leave out sunflower oil and cod liver oil) or you buy organic formulas from "Hipp" or "Holle". Still formula but better than the commercial one. Carrots and Fenukgreen can be good to increase breastmilk. There are other foods mentioned on the internet as well, such as rasberry leaf tea. You need to try for urself.
But ideally you get a breastpump, possibly electric from medela (manual pumps can be useless), after some time (weeks) your body will get the signal to produce more milk, which you can then give to your baby and even fill up bottles for extra supply. Make sure you get the right nipple size, otherwise pumping can fail, also be consistent when it comes to pumping (once a day).
I am certain that almost everything you eat will get to ur baby and can effect him/her. During and after pregnancy. Plenty of people that I know which now have babies and toddlers ate rubbish, had C-Sections, premature births and all kind of health problems with their babies. I would STRONGLY advise to stay away from Soy, regardless if organic. Keep a food journal and see what food causes the worst reactions. Start with grains and pasteurized dairy. Gluten is the worst. Easiest and fastest way to eat raw meat is beef tartare. For ex: beef, egg yolk, salt and mustard (homemade is best). Tasty, nutritious and fast.