Gets as far as waking up? (5,2)
I believe the answer is:
comes to
'waking up?' is the definition.
'gets as far as' is the wordplay.
'gets' becomes 'comes' (coming is a kind of getting).
'as far as' becomes 'to'.
'comes'+'to'='COMES TO'
(Other definitions for comes to that I've seen before include "After eg heavy blows, recovers" , "Gets as far as - wakes up" , "Makes" , "wakes, and > slows to a halt" , "Regains consciousness" .)