My 16 wo DS2 seems to always get fussy 45-60 min. after waking up. He sleeps great at night, usually wakes up at 7:00-7:30 am. We're still working out A times, but he usually can stay awake 1hr30-1hr 45 min before needing a nap. We've started stretching out our 45 min naps so now he's starting to sleep 1.5-2hrs for naps. I've tried putting him down at this 1 hr fussy mark and it took him an hour to fall asleep, so I don't think he's tired? He is bottle fed (with breast milk) and eats about 5 ounces every 3-4 hrs. I do get a burp out after he eats, too. Anyone else notice this with their LOs? Is it gas/digestion related, boredom, just wanting snuggles? I should add that it does seem to help when I pick him up/start moving around with him, but from that point on, he's more fussy until it's nap time...