Hi, I've been concerned the past four days my 16 month old daughter has been sleeping a lot during the day. She normally has one 90 minute nap. She is now sleeping 4-5 hours and I've been going to wake her up. I don't know how long she would sleep if I didn't wake her. She still sleeps normal through the night. A few wake ups but no problem falling back asleep. She may be teething and may be going through a growth spurt but this amount of sleep seems excessive. Any insight is much appreciated!