Grace, I’m not sure I understand your question and have been giving it some thought.
I don’t know if this will answer it for you, but there have been “food items” I’ve been very fond of while wanting to eat less. So what I’ve done is I’ve eaten this particular food less often, and then even less often, over time. So something I used to eat once a week becomes once a month and then once every few months.
Make your choices as you go along – rather than predicting you’ll eat it on a particular day. And notice the downside.
Let me know if this isn’t what you needed to hear!