K.S.
My daughter did the same thing a year ago (when she was almost 2) we decided to get her overnight diapers (by huggies)and put that on her at night. If you daughter still wakes up then I would change her diaper before you go to bed. It can not hurt, I was just a quick when I had to do it and never had a problem. Good Luck but 5:30am is a little early and my daughter is also a really good sleeper. We had bedtime at 7:30pm at that age and once we changed the diaper thing she was sleeping 12hrs again. Good luck