Question (which i won't wait for you to answer...lol): are your boobs pretty big?

Your lefty problem sounds SO familier to me! Only it was my righty that DD did that with...

My right boob had more milk, so a little suck suck suck then a giant pause while she just let the let-down pour into her mouth, then every now and again a hard suck to keep it flowing without more effort/drowning herself - eventually she would go to fluttery sucks, but it was WEEKS before she could drain my whole right boob that way! When i pumped at about 2 months PP i can remember getting 100mls from lefty and 280 from righty!!!

Anyway, my tips.... Have a muslin cloth with you. Every time she looses grip and hurts and you take her off to re-attach, dry your boob and her mouth/lips (gently). A dry boob is WAY easier to get a grip on and a big wet booby is so slippy it's really easy to slide off and then start doing things like clamping upwards to try to stay on... Re-attach as many times as necessary - remember shes still learning what a "good" latch feels like, and only by being corrected can she learn. So yep, take her off and put her back. On day 3 i counted and in one feed i re-attached DD 34 times! And she was a pretty brilliant BFer, so as you can see these issues are incredibly normal. I never got damaged nipples, which was my main aim, plus she got masses of milk and my supply was good because she got about 5 let-downs a feed being off and on and off and on like that! By the 3rd WEEK i was having to correct her re-attachment about once every 2 days (usually because she began to nod off and slipped off a bit), things get easier fast! One last thought - with DD i wrapped her arms to feed her (just swaddled her basically). You don't mention her wriggling with her arms but i definitely found it helped DD to focus during those early days, without the distraction of her still-largely-random body movements making staying on harder

Good on you love. Hang in there.

Bxxx