Too bright and sick of novels? (7)

I believe the answer is:

overlit

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'too' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'bright and sick of novels?' is the wordplay.
'bright' becomes 'lit' (similar in meaning).
'and' means one lot of letters go next to another.
'sick of novels?' becomes 'over' (I can't justify this - if you can you should believe this answer much more).
'lit' put after 'over' is 'OVERLIT'.

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I've seen this clue in the Sydney Morning Herald.

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