My little lady turned three months old on the ninth and for a month had been sleeping from 10 or 11 to about 7. She would eat and sleep again until 9ish. It was really nice to get the sleep but a few days ago she started waking up about 3 or 4 am and then again at 7 am and is now up for the day about 8:30. Has anyone else had a little one just start waking up again? I tried feeding an extra ounce before bed but it doesn't seem to help. I don't mind it but was hoping to get some ideas on why.