LO is 10 weeks old and his sleep has been AWFUL this week. He won't nap for more than 3-4 hours total during the day, and now he's gone from waking up 1-2 times in the middle of the night, to waking up once every 2 hours. He's also not falling asleep easily at night like he used to. Is this a sleep regression? I guess I wasn't really expecting this until 4 months. Did anyone experience one early?