Wasted hours in making up feed (7)

I believe the answer is:

nourish

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'up feed' is the definition.
'nourish' can be an answer for 'feed' (I know this). I'm not certain of the 'up' bit.

'wasted hours in' is the wordplay.
'wasted' indicates anagramming the letters.
'hours'+'in'='hoursin'
'hoursin' anagrammed gives 'NOURISH'.

'making' acts as a link.

Can you help me to learn more?

(Other definitions for nourish that I've seen before include "encourage growth" , "[OPPOSITE OF] starve" , "Supply with food, keep well" , "Feed, sustain" , "I rush on (anag.)" .)

I've seen this clue in The Daily Mail.

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