Hi.. My Daughter Was Exclussivly On Breast Feeding She Wouldn't

hi.. my daughter was exclussivly on breast feeding she wouldn't drink any of formulas that i offered her but recently i had to leave her for a week through which she started to drink formula which is Nido one plus by that time she was 9 month old now she is 11 month and still on same formula iam concerned that it might harm her cuz its fo children older than 1 yr ... do u recomend me to change her formula?and why? plzz i need an answer
with best regards