Which Side to Breastfeed On Next, and How to Remember
Short answer: a common approach is to start each feed on the side your baby used less, or finished on, last time, so both sides are used about equally over the day. The hard part is remembering at 3 AM, so write it down.
Why alternate the starting side?
Babies often feed most actively at the start of a feed. Alternating which side comes first helps both sides get used regularly, and many parents find it keeps one side from feeling much fuller than the other. Some babies take one side per feed, others take both; either can be fine.
Ways to remember left or right
- A note or log with the time and the side, written right after the feed.
- A physical marker such as a hair tie or bracelet moved to the side to start next.
- A tracker app that records time per side and shows the next side for you.
Physical markers are easy to forget to move, and they don’t help a partner who takes the next feed. A shared record works for everyone.
When to ask for help
Pain, cracked skin, a hard or red area, or worries about your baby’s intake are reasons to contact your doctor, your pediatrician or a lactation professional. A per-side log is useful to bring along.
How Nurslet helps
Nurslet’s breastfeeding timer counts the left and right sides to the second, lets you pause when the baby dozes off and switch sides without stopping the feed, and lets you fix the start and end times afterwards. The main screen then shows the time since the last feed and the side to start next, and Stats show the left and right balance over 7 or 30 days.
FAQ
Do I have to use both sides every feed?
Not always. Some babies take both sides, others are full after one. Many parents simply start the next feed on the other side. If you have pain or concerns about supply, ask a lactation professional.
One side feels fuller. What should I do?
Starting the next feed on the fuller side is a common approach. If one side stays uncomfortable, red or painful, contact your doctor or a lactation professional.
Why track how long each side was used?
A per-side record makes it easier to alternate and to notice if one side is consistently used less, which is useful to mention to a lactation professional.
Related guides
This guide is general information, not medical advice. Every baby is different; talk to your pediatrician or a lactation professional about your baby's feeding, sleep and growth.
Get Nurslet: time since the last feed and the next side at a glance (Google Play)
← See Nurslet: one-tap feed, sleep and diaper log, partner sharing, no account