I'm just trying to get my 13month DD onto cows milk. We've been using it in cooking and on her cereals since we started weaning at 6 months. I've been giving her cow's milk in her daytime bottles (little madam still wakes for food a couple of times a night - which I give toddler milk.) Her nappies have been bright yellow and stinky! Is this normal when making the change from formula, or do I need to ease her into the cows milk more gently?