My son was similar - if not hungry, not eating at all. But on the other hand going from 3pm to 7pm was too much and it is too much for many LOs. So we were doing here 3, 5 and 7:15 if I am correct for ages and then transferred to 3 and 6:30 - but we did dreamfeed so 7 or 6:30, it didn't matter. As I said, try feeding at 5pm if she takes the bottle (she takes one even if at 3pm she had a feed?), but offer just half on normal portion or so.