Preface: We are really struggling with breastfeeding, I think we are going to start combination (breast, pump, formula) feeding soon, I'm just trying to make it to 3 weeks to avoid any issues or confusion. We are at 2 weeks EBF now (and boy does it feel longer).

I have seen some posts in the past about formula feeding but most are a little old... Anyways I was wondering who formula feeds/combination feeds/ supplements, why they started (no judgement here!), and how old there baby was when they started.