Don't feel pressured into introducing solids just because LO turned 6 months old! It could be the simplest of reason that she's just not ready yet.
Here are some things you should look at to see whether she's ready:
1) Able to sit unsupported by herself
2) Shows eagerness in food (eg. going after you when you're eating, making "mummum" movements with her mouth etc)
3) Hunger cues between milk feeds like sucking her thumb, biting/chewing on objects, being irritated for no reason etc.
Just remember that milk is the main source of nutrients for LO until she's 1 years old, so before that, any form of solids are just "for fun" in a way - there's no need to rush into things :)
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