Preferably, use a perforating wheel to cut,
but in lack of such, you can cut along lines with a scalpel,
taking care to not cut all the way to the edge.
There comes a time for us all when we could use a bit of assisted living. Bigger dials. Sharper knives. Reading glasses. Color coding. It's not only with OLD age, no-no. Confusion hits from time to time, at any age. And yet, the time is always right to grab without thinking. Never again will you reach for the nondescript, sometimes confusing, although gracefully beautiful, wooden spoon and then reach again as you for the nth time have grabbed the wrong one. Think red, yellow, blue in descending order. Deliberately chosen to reflect a traffic light. Color coding prevents the pause. A fine design that has proven itself over time.