To answer your other question: “ Any mummas out there that gave up breastfeeding too early and regret it down the track?” I highly doubt you’ll find any! There’s a hilarious line in one of the Pitch Perfect movies, when a group of very conventionally attractive women start singing a sappy, hyper-feminine, wispy song - a competitor mutters under her breath something along the lines of “ugh, you can tell they were breastfed”. 😝
It goes without saying, you could never look at someone in their twenties, either in isolation or looking at their relationship with their mother, and have the faintest clue whether they were breastfed or not. I don’t see many parents of teenagers agonizing about having formula fed their infants.
Breastfeeding benefits are at a population level. At an individual level, there are soooo many factors (including inverted nipples, tongue tie, and mastitis) that can make breastfeeding more of a challenge than it’s worth. I know several women who a year or two after birth felt moderately regretful that breastfeeding didn’t work out for them. I know many more women who in retrospect stuck it out too long, put too much pressure on themselves, and really imperilled their mental health. They regret those dark days with their newborns far more than switching to formula.
I’m not saying you should give up. I pushed through with my first DD when my milk was slow to come in. It was stressful but it paid off, and I breastfed two of my three kids until they were nearly 2, and personally I loved it. But I also know that a lot of that was down to luck.
Whatever you decide, I think you need to work hard to take “regret” and self-judgment and deviation-from-the-plan off the table, difficult though that may be!