Food and sleep blocked by father (6)
I believe the answer is:
repast
'food' is the definition.
(repast is a kind of food)
'sleep blocked by father' is the wordplay.
'sleep' becomes 'rest' ('rest' can be a synonym of 'sleep').
'blocked by' indicates putting letters inside (I've seen this in other clues).
'father' becomes 'pa' (pa is a kind of father).
'rest' going around 'pa' is 'REPAST'.
'and' is the link.
(Other definitions for repast that I've seen before include "Something to eat" , "Banquet" , "lunch?" , "Food - tapers (anag)" , "A formal sort of meal" .)