Have any of your babies tried or drinking cows milk already?

Since my son is 11 months old now, he has been drinking cows milk once a day and he is doing very well on it. Today, he ate a bowl of cereal and he loved it. I’m thinking about just letting him have cows milk instead of formula here in the next couple of weeks. He is already having 3 meals a day with two snacks a day so I figure he is ready for the cows milk by time he is 1 year old to where he won’t have any baby food at all nor formula. Have any of your babies tried cows milk yet? Do you think they are ready or no? Is your baby already drinking cows milk with little to none formula/breast milk? Or are you just waiting until after your baby is a year old to try it? Also if your baby is drinking cows milk or once they do start drinking cows milk, are they going to be drinking from sippy cup or bottle or both? Right now, my son is drinking from both but trying to lean him towards sippy cup a little after a year old. My nephew is still drinking from bottle and he is almost 1 1/2 years old (not saying that’s bad at all) but he hates sippy cups so he won’t drink from one at all and my pedi keeps pushing the sippy cup on my son for full time.