Exhausting at university struggling to make ends meet (4,2)
I believe the answer is:
hard up
'struggling to make ends meet' is the definition.
(I've seen this before)
'exhausting at university' is the wordplay.
'exhausting' becomes 'hard' (I can't justify this - if you can you should believe this answer much more).
'at university' becomes 'up' (slang term meaning at university).
'hard'+'up'='HARD-UP'
Can you help me to learn more?
(Other definitions for hard up that I've seen before include "Out of funds - it's tough" , "Short of cash" , "Badly-off" , "Being without cash" , "Struggling to make ends meet" .)