So my LO is almost 6 weeks old and eats 3 oz every 2 hours. Hell be content for 45 min then cry hungry again and try to suck our faces off. I tried 4 oz at feedings but he spits it up. And I tried an oz or 1/2 oz in between feedings and he sometimes spits it all up. I've heard some people with this issue try a tiny bit of rice cereal in the formula. My parents are against trying it cause they said he isn't ready for it. What is everyone's advice/opinion ?!?