How many weeks is she now? About 13 or 14?
I suspect that she is going through the change from 'lots of little naps' to one or two longer naps.
Now, I am no sleep guru (that's an understatement!) but when my son was about this age I decided to 'set' his nap. He had never been a huge daytime sleeper, but was having increasingly short power naps. So, everyday for about a week I took him out for a long buggy walk around about 1pm. He gradually became accustomed to sleeping at that time and now has a nap everyday from 2 - 3.30pm at home or 12.30 - 2pm when he is at nursery. He is now 2.3 years old.
Apart from that, you seem to be doing a great job. Seriously, think of things as a 'sequence of events' rather than a routine. We have never had a routine, but once past about 14 or 15 weeks I could definitely see a rhythm emerging. At six months the introduction of food begins to punctuate the day, the milk feeds begin to slot around the meals and your days develop a structure all of their own.
At 2.3 years my son's day is now:
bf, breakfast, nappy and dress
play or go out
lunch, nappy, bf, sleep
play, nappy, play
supper, nappy and undress
play, bf and sleep.
So one day it might begin a bit earlier or later, but you almost always know what is coming next.
I remember one of my lovely antenatal friends talking about another family, who were 'going with the flow' with their young baby. She had read the books and was convinced that they were, one day, going to suffer some terrible parenting crisis due to the 'accidental parenting' or 'lack of routine', but as she said, that crisis never came. They were fine, their baby was fine..
But why on earth aren't you eating during the day? Seriously, every time you sit down to breastfeed get yourself a snack. I found small cartons of juice quite helpful, cereal bars, bits of cooked chicken, small sandwiches and, oh the beauty of breastfeeding, as much cake as I fancied!