I am hoping there is someone out there that has...

I am hoping there is someone out there that has been in the same situation as me. my 8 month old daughter still, after 2 months, wont take any solids other than plain Farex rice cereal. I've tries vegies, fruit everything. She is still being breast fed and the last 2 weeks she has stopped taking both sides of the breast, only 1. So I'm worried she isn't getting enough. Is there any harm in only having Farex for a while?