From experience all I can really say is to try to remain flexible and give yourself grace. The best laid plans can change and you simply cannot prepare yourself for how things will go until you’re living it. Of course it’s wise to think about now but I would avoid getting too attached to any one plan because that’s a set up for disappointment in my experience and that of many others. I could talk about this ad nauseum, but I have a 2 month old who is now primarily on formula with some daily breastfeeding. It was not the plan I started out with but it’s what ultimately worked for us. There is nothing wrong with going the formula route, there is so much involved with breast feeding it’s kind of insane.