our low is almost 4 months, and is on a 3.5 hour easy. my question is, sometimes he wakes up from his nap early (for him) after 1 hour, and doesn't call for me (he can hang out there for a good 15 min if not longer) right away. wondering, do i wait till he appears hungry to feed him and just get time up? wondering if it is more important to follow the routine (to eat right away), or to try and stick to the 3.5 - 4 hour routine?