If you are trying to reduce or limit something, you might use the phrase 'cut down on,' but there are several synonyms that can help you express the same meaning. Instead of saying 'cut down on,' you could opt for 'reduce,' 'curtail,' 'limit,' 'decrease,' 'minimize,' 'diminish,' 'pare,' 'scale back,' 'trim,' or 'lessen.' Each of these synonyms indicates a desire to cut back or restrict something, whether it be food, spending, or any other activity. Using these synonyms can help add variety to your language and help you communicate your intentions more effectively.