Almost out of it? Don't get up! (5,2)
I believe the answer is:
sleep in
'it? don't get up' is the definition.
I can't judge whether this definition defines the answer.
'almost out' is the wordplay.
'almost' means to remove the last letter (most of the word but not all of it).
'out' becomes 'sleeping' (out can mean asleep or unconscious).
'sleeping' with its last letter taken away is 'SLEEP IN'.
'of' is the link.
Can you help me to learn more?
(Other definitions for sleep in that I've seen before include "Stay late in bed" , "Wake later than intended" , "Get up late" .)