Since my DD was 2 months old, she has been sleeping through the night (10-12 hrs) and taking 2 naps a day that were a least an hour long. She is 4 1/2 months old and now all of a sudden she will only take like a 15 min nap!!! she does wake up earlier in the morning, which doesnt bother me, but the 15 min nap is killing me! I think that she is teething already, but its not like she wakes up all fussy and cranky, just her normal happy self! anyone else have this happen to them? or have any suggestions?