So at my daughter's 9 month checkup, her doctor said that I can start to slowly transition her to whole milk. I feel it's a little too soon and will do so when she's a lot closer to her first birthday. At the grocery store today when I went to buy her formula, I noticed that they sell a stage 2 transition formula for 9months-18months. Now, what is the difference between that and regular formula? and if anyone has tried it? Or is it just a waste and slowly transition to milk (when ready). I am a first time mom here. BUT I MIGHT ADD THAT IT WAS SIGNIFICANTLY CHEAPER! lol