My son is about 3 weeks old and eats about 4oz every 3 hours but exactly 2 hrs (like clock work) after eating he wakes up fussing with all the signs that hes hungry but if we feed him he will either only take an oz and go back to sleep or spit it back up. We try calming him w the pasifier assuming he just wants to suck to soothe but that doesnt work for more than 5-10 min. Also tried feeding him more during feedings but he wont take more than 4 oz at a time...feeling kind of stuck...