1 week old upset tummy 😢

Sydney’s Mommy 👨‍👩‍👧🇯🇲🇭🇹🇹🇹🎀

I just switched my one week old to Similac Sensitive today and it’s already hurting her stomach 😢. We previously used Similac Pro-Advanced but noticed she wasn’t pooping as often and it didn’t keep her full. Has anyone else had problems or issues with the sensitive formula? I just want my baby to be able to poop and be ok.