Change too much? About time to retire! (8)

I believe the answer is:

overedit

'change too much?' is the definition.
(to edit more than is necessary)

'about time to retire' is the wordplay.
'about' becomes 'over' (I've seen this before).
'time to retire' becomes 'edit' (I can't explain this - if you can you should believe this answer much more).
'over'+'edit'='OVEREDIT'

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app