Need some help 😪

My son is 10 months old , and up until now he has been strictly breast fed , no formula , now my milk has started to dry up and I have been advised to supplement with formula to keep his weight up, my problem is , he will not take the formula . He is refusing it & I need other options . If Anyone out there has any suggestions they would be greatly appreciated . I'm struggling a lot with having to supplement him . I just need to know what to do 😔