My LO's tongue tie (he had a posterior tongue tie) was clipped at 2 weeks old. His recovery was great--he didn't seem to notice anything after the initial crying. As for latching/nursing, it wasn't immediately pain free but my nipples DID immediately maintain a normal shape during nursing (no more lipstick nipple). The pain gradually improved over the next week. I still have pain during latching/nursing, but I think that is due to his latch not being deep enough.
did you notice that your LO was more efficient both in time to nurse and in how much milk fed?
We have appt next week for this, hoping it solves our time and milk issues soon after, pumping to suppliment is exhausting!