Busy hospital in Eton botched attempt (2,3,2)
I believe the answer is:
on the go
'busy' is the definition.
(similar in meaning)
'hospital in eton botched attempt' is the wordplay.
'hospital' becomes 'h' (abbreviation for hospital on maps).
'in' is an insertion indicator.
'botched' indicates an anagram.
'attempt' becomes 'go' (go is a kind of attempt).
'eton' is an anagram of 'onte'.
'h' going within 'onte' is 'onthe'.
'onthe'+'go'='ON THE GO'
(Other definitions for on the go that I've seen before include "Active, always doing something" , "Running around busily" , "Very busy, in constant motion" , "Active and energetic" , "Always busy" .)