So question about me, to an extent (8)
I believe the answer is:
somewhat
'to an extent' is the definition.
I can't judge whether this definition defines the answer.
'so question about me' is the wordplay.
'question' becomes 'what' (I can't explain this - if you can you should believe this answer much more).
'about' means one lot of letters go next to another.
'what' put after 'me' is 'mewhat'.
'so'+'mewhat'='SOMEWHAT'
Can you help me to learn more?
(Other definitions for somewhat that I've seen before include "Moderately" , "up to a point" , "Rather, a little" , "Quite" , "To an extent, a little" .)