My Lo has always been such a happy baby and a great sleeper! She goes to bed at 8 and sleeps through the night (9-11 hours of sleep) and she takes three naps a day! First two naps are between 1 1/2 to 2 hours and the last nap is 30 minutes. But lately my happy baby is more cranky and whiny and doesn’t take very good naps during the day. I’m lucky if I get her to nap for 30 to 40 minutes. The only good thing is she is still sleeping through the night. Is this part of teething? She puts everything in her mouth, her cheeks always look flushed, and her gums our white.