I am having the EXACT same problem!!! Emmy is 4 1/2 months old and I take her out around 10-11pm. She used to sleep until 7ish and that was fine for me! The last week though she's been getting up at 5:30 in the morning! It's killing me, and I don't know whyyy! I'm hoping this is just a short stage because I don't do mornings that early with a full day of classes ahead of me! =(
-Ashley & Emmy