Hi there, I have a good routine, with good naps and adequate amounts of food in day but my lo still wakes once at sporadic times, but not hungry, just nosy, so I just accept that that is the way she is for the mo, nothing I can do W2S didn't work and to be honest it does not bother me really as she is not distressed.
Maybe your lo is just waking hungry due to that lovely 6 month growth spurt coming up when most introduce solids? I know they advise waiting until 6 months, so it was just a thought that she may be getting hungrier. If she takes a full feed I would not have thought it was habit, if i try and feed my lo and she is not hungry she just refuses it.