So the switch to regular milk did not go as smoothly as planned. After Levi had a bottle of only milk, he had a super bad night. He was teething, but it was so extreme I thought maybe his tummy was bothering him, too, so we went back to half formula, half milk, and rice cereal in every bottle. Over the past 2 to 3 days he has been drinking less and less. He would start to drink, then make "icky face" and stop drinking. I couldn't get him to take more than 2 ounces at lunch today. I thought maybe he had a sore throat, but he's been eating solid food very well. The nightly teething has been worse each night as well. So for dinner I made just formula and rice cereal. No icky face! No problem drinking! He downed almost the whole bottle! So, we will continue with formula for a while before trying milk again. I'm glad it was such a simple fix!