LO is 3 weeks old and barely had 2 naps today both of which were only about an hour then another 45 minute one this evening. Now I'm trying to put her down for the night. Fed her and she seemed to start to fall asleep, but now she's wide awake. I thought newborns were supposed to sleep like 18 hours a day?? She only sleeps about an hour or two at a time at night and eats at least every two hours. What is going on? Is this normal?