So little time! (6)

I believe the answer is:

minute

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This could be a double definition.

'so little' is the first definition.
'minute' can be an answer for 'little' (similar in meaning). I'm not certain of the 'so' bit.

'time' is the second definition.
(unit of time)

Can you help me to learn more?

(Other definitions for minute that I've seen before include "Extremely small" , "60 seconds; tiny" , "Little - bit of time" , "60s" , "Little -- 60 18 across" .)

I've seen this clue in the Evening Standard.

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