Is there a change in taste? I suggest slowly introducing her to the new formula by mixing it with the old one. Like maybe 4 scoops old formula and 1 scoop new formula. Then when she is getting used to it, changed it to 3 scoops old and 2 scoops new. My girl also grow up drinking Friso. I see that the enhanced formula seems better as it is focused on good gut health and good poop. You can read up on their improved formula to see their benefits. https://www.friso.com.sg/campaign/novas-signature-milk I will say slowly slowly introduce don't give up!
Maybe slowly introduce. And at different places/timing too. If your child has older siblings, try asking older sibling to drink the milk together. My toddler always follow what her siblings eat/drink :)
My daughter also refused formula milk at 5 years.
don’t give milk if they don’t like it, if u find a need to then give supplements instead
Pauline Ho