My son was born on 11/28/19. We did really well for the first month with breastfeeding and bottle feeding (formula supplement til my supply caught up) then breastmilk. At about 2 months he started spitting up and colic crying at night. We started propping up to sleep and tried 4 different bottles. My original planned bottles were avent natruals, we tried colic original avent, evenflo balance feeding plus and finally the Bare. After trial and error the first few times we use the bottle-feeding nipple ( he couldn’t figure out the more like the breast one) and he’s doing so much better using the Bare system [bottles] now when he has them for milk or juices.