Hi - been asked by a friend with 10 month old twins if she can mix formula with cows milk in their bottles. My DS is 4 now and I can't remember last week never mind 3 years ago when he started cows milk, but I think the advice then was not to mix it (reckon it would taste pretty rank anyway). The twins eat really well and have cows milk on their cereal. I have found a couple of messages on here where people have put 10 month (ish) babies on to cows milk. Any thoughts please?