This is more a behavioral question than routine.
We've been implementing EASY for a couple of weeks now. My son just turned 12weeks, and so far, since coming out of on demand feeding, we have been having EASY periods of 2h to 3.5h during the day (amazing how this worked so well, since he had been feeding every hour or so). When he wakes up at 2h, I usually try to sush him back to sleep for half an hour, to get at least 2.5h in a cycle. I'm okay with all of this for now, and will try to start lengthening the cycles now that he's reaching 3mo.
My problem: he used to be a really gentle baby in what concerns hunger. He always cried of overstimulation and overtiredness, but rarely of hunger. Of course, I would also offer the boob all the time I saw his cues. Anyway, now he has become a little monster when he wakes up. If I take more than a couple of minutes to feed him, he shrieks! Even as I'm unbuttoning my shirt with him on my lap.
Honestly, this actually made me doubt the EASY correlations. Tracy didn't want children associating eating with sleeping, but in some cultures people actually sleep after eating... Now I have a child that is screaming unless he is fed immediately after waking. How to solve this before he starts eating solids and I'll need to take the time to actually prepare his breakfast?