Toddler, extremely exhausted, has to be carried (5)
I believe the answer is:
toted
'to be carried' is the definition.
(I've seen this in another clue)
'toddler extremely exhausted' is the wordplay.
'toddler' becomes 'tot' (synonyms).
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'exhausted' with its middle taken out is 'ed'.
'tot'+'ed'='TOTED'
'has' is the link.
(Other definitions for toted that I've seen before include "Carried (something heavy)" , "Bore" , "Lugged" , "Carried (a gun?)" , "Carried - conveyed" .)