Hey Amy EL! My lil miss is going about 3 hrs between feeds, sometimes only 2.5, and sleeps long periods overnight (last week 12 hrs- no idea how that happened), but as soon as she went longer and thus had one less feed during the day she woke much more frequently overnight.
Although I don't follow SOS, I have found that's he is mostly predictable during the day. I think there is a growth spurt about now, as well as a big wonder week, so maybe that is influencing frequency of feeds? Just thoughts, but sounds like you are doing well!!