I would definitely give her solids to experiment with when you are having dinner. I never found that it interfered with BF in the evening (and my boys consumed a LOT of their solids) as it was a comforting off to sleep BF, not just a fill your tummy BF, if that makes sense.

I wouldn't change the rest of her routine though. I find lunch is at a different time for all of us each day anyway, so changing a 6 month old's routine to give her a feed seems silly. I would just give her some food if others are eating and she is properly awake. Maybe after the mid morning feed as she doesn't sleep straight away? As Astrid said, it is mostly to get them used to textures and the idea of food for the moment so the amount that she actually consumes doesn't really matter.