Harder 2nd time.
Both boys had tongue tie, DS1 was a very slow feeder and it was like sucking razor blades through my nipple but it was snipped at ~2wo and it got easier after that. Fed til 23mo.
DS2, although the tongue tie was spotted immediately, couldn't get a referral for snipping until he was 5wo. He was a gulper and so had lots of reflux and colic, from all the air he was taking in. But he fed like a demon! Very sad when he'd bring back what looked like an entire feed though.
Reflux improved after the snip, but his latch was still a bit odd, and he caused a lot of problems on the L boob mainly. I had lots of compression issues, complicated by undiagnosed thrush in the nipple (didn't get it checked for ages because DS2 had no oral thrush - I had him checked!). Lots of pain, bleeding, bleb-like spots, ugh. No idea how I kept going. Anyway, finally got over the thrush with Daktarin oral gel and the pain reduced, but I've also had problems with lateral splits around the sides of the nipples, which of course reopen whenever the nipple is stretched at every feed/pump.
Still going - he's just turned 1 and still feeds about 4 or 5 times every 24h. Don't know how much longer we'll keep it up though - I'll be amazed if we get as far as I did with DS1.