Thanks!!! I've been trying to move her to 4 hours since 4 months, but it has been very difficult. She has only taken max 4-4.5oz, so I'm not sure she can go so long in between, after 3-3.5 hours she gets very uncomfortable to the point of crying. She is also a chronic 45-min napper so many times, I confuse hunger/tiredness cues. Any tips?