Not moving to reorder treats (2,4)
I believe the answer is:
at rest
'not moving' is the definition.
(I've seen this in another clue)
'reorder treats' is the wordplay.
'reorder' is an anagram indicator (I've seen this in other clues).
'treats' anagrammed gives 'AT REST'.
'to' acts as a link.
(Other definitions for at rest that I've seen before include "departed" , "Immobile" , "Motionless" , "Stopped" , "late" .)