Has anyone started the process of switching from formula to whole milk? My son will be 11 months old on Friday, so I was thinking about slowly switching him over starting then. He is on Isomil Advance powder formula, and here's what I have come up with. For 3 days we will do 4oz formula with 4oz whole milk, then go to 2oz formula with 6oz whole milk, then eventually be up to 8oz of whole milk. Is this the way that it should be done? Are there any other suggestions?