I am truly exhausted! Baby girl hasn't been sleeping to great the last few days. She's up every two hours all throughout the night. I believe it's the formula that's the problem. I was giving her a milk based formula and it's not working for her. Two minutes after she starts drinking her bottle her tummy starts to rumble. You can hear the gas building up. Similac Advanced milk based formula is to much for my baby's tummy. I purchased a soy based formula from Target and so far it seems to be working well with her digestion. Hoping to see a difference in her sleeping tonite.