There is usually a growth spurt at 6 months would.could partly explain the frequent nursing! Is it just in the daytime or have nf's increased too? Is she just snacking or using the time or comfort or taking a good feed?
I would really caution against relying on solids to fill her up and help her sttn - often they can have the opposite effect, either because she is getting full from solids and not getting enough bm or because it can cause digestive upset.