Language box · stop + -ing / to-infinitive — your rule, confirmed

stop + -ing — the activity ends (quit / give up)

I stopped drinking coffee last month. (= no more coffee)

stop + to + infinitive — pause one action in order to do another

On the way to work, I stopped to drink a coffee. (= the journey paused; the coffee was the purpose)

Extend it — the same logic works with remember, forget and regret

I remember locking the door. (memory of an earlier action) · Remember to lock the door! (an action still to do)