Few OK, struggling with hard time? That's far from the truth (4,2,3,4)

I believe the answer is:

wide of the mark

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'far from the truth' is the definition.
I can't judge whether this defines the answer.

'few ok struggling with hard time?' is the wordplay.
'struggling with' is an anagram indicator.
'few'+'ok'='fewok'
'hard'+'time'='hardtime'
'fewok' mixed up with 'hardtime' makes 'WIDE OF THE MARK'.

'that's' acts as a link.

Can you help me to learn more?

(Other definitions for wide of the mark that I've seen before include "Far from true" , "Inaccurate" , "Well off target" .)

I've seen this clue in The Telegraph.

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