baby turned 2 weeks today, last night he was a little fussier than usual but still had his 2 hour sleep windows between feedings (normally he can go 3 hours between feedings) but today he has not had a full two hour nap yet, he just keeps eating non stop, he will fall asleep on me ill put him down and he will wake up after half an hour (hour max) fussing, he seems cranky and tired because he keeps yawning. im not sure if this is normal or should i be worried