Combo Feeding to Formula - How?

Kayla

My daughter is currently 4 months and is currently combo fed. She gets bottles that are 3 oz breast milk, 3 oz formula. My supply has been getting lower and lower and we decided to transition her to full formula, especially since she’s starting daycare soon. How many days should it take to transition her to full formula if she’s already talking half and half bottles? I’m trying to stop pumping ASAP due to a very painful bump on one of my nipples.