DS is now 8 months old and is still having the same Aptamil 1 he’s always had (the one that is suitable from birth). I’m now worried that I’ve done the wrong thing and should have moved him onto the Aptamil follow-on milk when he turned 6 months. Why do they have follow-on milk - is it because it contains more iron? I’m worried DS isn’t getting enough iron because he’s not had any meat yet, just veg, fruit and carbs. Please help!