Get confused and put two Ds in “drink” (5)
I believe the answer is:
addle
'get confused' is the definition.
(I've seen this before)
'put two ds in drink' is the wordplay.
'two ds' can mean two replacements for 'd'.
'put' is an insertion indicator.
'in' is an insertion indicator.
'drink' becomes 'ale' (ale is a kind of drink).
'd' placed into 'ale' is 'adle'.
'd' inserted into 'adle' is 'ADDLE'.
'and' acts as a link.
(Other definitions for addle that I've seen before include "Mix up or confuse" , "Confuse; go off" , "(Of eggs) turn bad" , "Get rotten" , "Confuse - decay" .)