cut back
phr. v..phr. v.. to reduce the amount of something you use, spend, or do.
phr. v.. to reduce the consumption, expenditure, or frequency of something; often used in financial or health contexts.
We need to cut back on our spending.
The doctor told him to cut back on sugar to improve his health.
The company decided to cut back on its marketing budget after the quarterly reports showed a significant decline in revenue.
often used with the preposition 'on' before the thing being reduced.
contrast with 'cut down on' (very similar, often interchangeable) and 'cut out' (to stop completely); 'cut back' often implies a strategic or necessary reduction.
I am trying to cut back the coffee.I am trying to cut back on coffee.when followed by an object, the preposition 'on' is usually required.