I’m so glad I’m not alone in having a moment of weakness and getting frustrated with my baby. I actually let it happen twice. I have a baby who had a slight tongue tie too. I had nipple fissures (huge bleeding scabs on the tips of my nipples) from him chomping down and having such a strong suction, and was literally scared to breastfeed because it was so torturous and painful the entire feeding. Yelling every time just like you, sometimes having to quickly rip him off and breaking down in tears. I would have to go on 24 hour break and pump only. I did that twice to let my nipples heal, and now my left nipple tip is permanently damaged and is cratered from poor healing from the fissure and is still painful to latch. My baby hated breastfeeding and and will always punch and scratch my boobs and would rather suck on his hands (since day one) unless I have him zipped up in a swaddle to hold his hands down. It’s been a nightmare. It takes a while to get him to latch. I used nipple shields (one LC gave me one by madela (I was still bleeding and getting fissures) and then another LC gave me a conical 20mm mamivac which was a little bit firmer and easier to use but still painful). Finally he had his “thin” tongue tie clipped by his pediatrician at day 14. He latched immediately so much more comfortably ever since that day, but he still has issues at 3 weeks old. He still fights my boob unless swaddled and he’s not able to pull all of the milk out. He will yank on my nipple as if he’s pulling my whole nipple off with his mouth as if there isn’t a fast flow of milk (usually my supply drops from 11am-4pm to where he actually has to work for a let-down) and will cry within a couple seconds of trying. Once I get him calm enough to latch and stay latched he just uses my nipple as a very gentle pacifier for over an hour, lightly swallowing every ten or so sucks. There have been times I have tried feeding him for 4 hours straight and I sometimes have to end up bottle feed him because he is still bobbing for food but won’t suck enough to get a let down. I feel like he cluster feeds (feeds every 20 or 30 minutes) every other day. I’ll have one good day and one terrible day. I’m trying to stay strong and continue with breastfeeding because I know how it can help with IQ and oral features and bonding and so-on, and honestly I’m jealous of other new moms in my life who get to breastfeed. I do love bonding with him and holding him during the good times of breastfeeding. My LC says that his feeding skills and my supply even out by week 6. If it’s not better by week 6 though I’m switching to pumping at least alternating with bottle and breast more because mentally it is debilitating at times, especially with the amount of time and effort and patience it requires. I’m right there with you and I hope for the best for you.