Sone people have success with changing over ounce by ounce. So if he has 8floz Mae 7floz of formula and add 1floz of full fat cows milk. Then up the amount of cows milk, ounce by ounce until its all cows milk.
Other babies are just happy to swap completely in one go.
Yes, you are right too. The current recommendation is to drop bottles completely at 12 months.
My ds will be 1 year soon. He is FF fed. What do I do next. Can I immediately give cow's milk at one year? And should I encourage him to drink milk from a beaker? He has 2 bottles currently of 8oz - morning and before bed.