Looking for experiences people have had with this! My 6 week old is crying a lot and I can't figure out if it's colic or if he's hungry. He eats 3 oz of formula every 2.5-3 hours. Every time after he eats, he seems like he wants more but according to my doc 4 oz is a lot for his little belly so I stick with 3. He always drinks the bottle and doesn't push it away which leads me to believe he's hungry. He doesn't ever spit up at all either but it seems like he's always hungry early, like after 1.5 hours and he cries so hard like he hasn't eaten in hours! Anyone been through this?