rufusing to eat help!

Lizzie
Someone help! I've got a 6 month old baby who's been on solids for a couple of months and is now refusing to eat! She will only eat what I put in her hand which is normally rice cakes, carrot puffs and rusks baby biscuits!
She has always loved her different flavoured pasta but now she just closes her lips so tight I can't get a spoon in!
If I portend to eat it she looks at me like "hey that's mine" opens her mouth, I put it in and she spits it straight into her bib! 
Has anyone ever experienced this and what do I do?
She also has 4x9oz bottles a day and normally 2 full jars and a banana but I'm lucky if she'll have half a banana and 1 jar