23/04/2026
So your breastfed baby isn’t growing well? They’re dropping centiles on their chart, they have fewer dirty nappies or smaller ones, they’re fussy or overly placid ….
Commonly you’ll hear one of two plans
A. Top up with formula (or maybe expressed milk)
B. Let it go, they’re finding their own curve, as long as they’re happy and meeting their milestones and have some wet and dirty nappies just chill and weigh them less often.
These are both bad plans!!
Plan A will lead to better growth and brain development but at the expense of breastfeeding for most babies
Plan B will lead to hungry babies whose longer term growth and brain development may be compromised and who usually get worse at breastfeeding and a reduced milk supply.
You don’t have to pick. You can have Plan C
- identify the cause of the slow growth and work to fix it
- supplement appropriately to preserve growth and development while protecting breastfeeding and working on the problem
- preserve the milk supply in a way that works for your personal circumstances.
- maximise the baby’s milk intake at the breast with some simple tweaks to feeding.
Too often we see parents who have followed Plan A or Plan B for too long and both are hard to come back from.
With Plan A often supply has gone and babies have a preference for the alternative feeding method (usually a bottle)
With Plan B supply is also gone and babies are too hungry and weak to feed effectively.
If you’re worried your baby isn’t growing well, check in early with someone who suggests Plan C to get feeding back on track!