Some people recommend (I would too) to just switch to raw completely and not do a long transition period. There is a lot of information out there and some of it can be confusing but it is so worth it. I would recommend gettting a freezer and stockpiling any good deals you come up with. Make friends with butchers and hunters. Some people feed vegetables and they usually subscribe to a "barf" diet. The ones that don't feed a "primal" diet. Look up the difference between the two and decide what works best for you. I do not feed vegetables. A good starting point would be 2% of his weight in food. For a 90lb dog, you might start with 1lb 7 oz of meet, 2.88 oz of bone and 1.44 oz of liver and 1.44 oz of non-liver organ meet. That is a daily starting point which you can modify. There is an app called Raw Dog that you can download for free that will give you the amounts.
Rusti EAC, TN-N, TG-O, WV-N, NCC, NJC, CGC, GSD Diva
Jerry Lee AXP, MJP, OAC, TN-N, WV-N, NCC, NJC, SPJ, UAG1