Cut down this month in a way (4)
I believe the answer is:
inst
'cut down this month' is the definition.
'inst' can be an answer for 'month' (I've seen this before). I am not sure about the remainder of the definition.
'in a way' is the wordplay.
'a way' becomes 'st' (abbreviation for street).
'in'+'st'='INST'
Can you help me to learn more?
(Other definitions for inst that I've seen before include "'In the present month, in short (4)'" , "This month in brief, as in corres" , "Business notation for the current month" , "Business usage for this month" , "Present month (abbrev.)" .)