After 6 weeks of exclusive breast feeding I was at my wits end and exhausted so decided to start introducing formula (it broke my heart to do it though). My DD has barely had any formula (aptimil) -only 2 oz 1 day, nothing the next and 3 oz yesterday and since then her poos have changed from complete water to moussy. Wasn't worried it's that she used to have about 4-5 soiled nappies a day now she has 1 a day if lucky. She hasn't been now for over 36 hours and I'm getting worried. Is this normal? How can such a tiny bit of formula have such an effect?