There is no need to move up to Step 2 unless you have a very hungry baby. Step 2 formula is casein based which is harder to digest so fills them up for longer. Step 1 is whey based and easier to digest. Step 2 is optional, not essential. You will not be adversely affecting her growth or nutrient intake in any way.
:yeahthat:

I would change back too. DS will stay on Step 1 until he's weaned onto cows milk at 1 year of age. We tried to move to Step 2 when he hit 6 months, but we had a week of horror constipation and I wasn't prepared to continue through that. So we just went back, and he's happy as larry. When you compare the tins, the difference is minimal. You can ensure they get all their additional nutrients through solids, which IMHO are better absorbed from natural food sources.