Dermal filler while breast feeding - should I throw away milk and feed my baby formula?

I’ve been getting filler for a few year and it has done wonders for my confidence. I have held off on touch-ups while pregnant but am eager to get my confidence back once the baby is born. I hate the idea of foregoing breastfeeding in order to get filler, but I know that once the baby is here my filler will have completely worn off. Could it be safe to supplement with frozen breast milk or formula for a few days or weeks after getting treatment and then resume breastfeeding again?