K.P.
Unfortunately, it happens! The same thing happened with my son - however, we remained consistent with what we were doing - with a bedtime routine and all of a sudden he snapped out of it. He goes to bed now at 8:30pm and doesn't wake up until around 9am and takes a nap about 1pm until 3:30 or 4pm. He is also he a great mood most of the time. However, I understand your frustration - I remember my husband and I getting up for hours at a time and he wanted to play and drink bottles - it was ridicilous. However, we chalked it up to growing pains, because nothing was wrong. Good luck - just be patient.