Rinse mouth
Rinsing the mouth sounds small, but for the child it means loose water sliding around, a lingering toothpaste burn and a spit aim that has to hit the middle of the sink. The pictures below walk through it calmly.
♀Rinsing mouth
A person rinses their mouth with water from a blue cup. Water splashes out of the mouth.
About this visual support
For a child, rinsing the mouth is three tasks rolled into one. First the water has to stay behind the lips without dribbling down the chin. Then the tongue and cheeks move it around, which can feel ticklish or uncomfortable if the toothpaste is still tingling. Finally the whole lot has to be aimed and released, ideally into the sink rather than the shirt or the mirror.
When the steps live on picture cards, one for taking in water, one for swirling, one for leaning over the sink and one for spitting, each moment becomes its own contained job. The visual schedule removes the guesswork and lets a sensitive mouth focus on one sensation at a time instead of all of them. That is often when you notice resistance was not laziness, it was overload.
A specific tip: use a small plastic cup with a line marked halfway up so the amount of water is always the same and predictable. In the Routined app you can place the rinse as its own step after toothbrushing, so the child sees that they are two separate jobs.