Breastfeeding "life hack"

With my first son, I used an app to track feedings and which side I'd nurses on, etc- eventually I could tell by feel/touch which breast was the one to start with, but this time I realized an easy "trick." I wear a hair band around my wrist which tells me which side to nurse on and as I'm nursing, I switch it to the other side so I know which one is for next time. This is especially helpful at night when I'm half asleep!! Hope it helps someone!!