Your baby may better adapt when changes in feeding are introduced gradually. To ease the transition, alternating between your baby’s current formula and their new formula over time may help. It’s important however, that you don’t mix existing formula with the new in the same bottle. We recommend starting by swapping out the morning feed first. This is so you can easily monitor for any adverse reactions. Then over the coming days, slowly continue to swap out subsequent feeds. Do this until all feeds have been completely swapped out to the new formula, transitioning the night time feeds last.  Give your baby time to adapt to this new routine as it can take somewhere up to 2 weeks to fully transition to a new formula.