I BF and supplement with formula, and at daycare LO gets pumped milk and formula. I'm still using the newborn flow AVENT nipples, and it takes forever for her to finish a bottle. I'm wondering if I should switch to the stage 2 slow flow nipples, but I worry it will be too different from the breast. For those of you who combo breast and bottles, what flow are you using? LO is 2 months old for those on mobile.