S.H.
My middle daughter is tongue-tied, 3 years old. I wish I would have it clipped when she was a baby. She had a rough time, and really still does have issues, with eating. She has a hard time chewing food well- and often gags on it because her tongue isn't able to help the chewing process effectively. Her speech is only slightly effected, I believe because some of the more difficult sounds- like L are in her sisters name so she has a lot of practice! She is traumatized by the dentist already so I am waiting to get it clipped. If I would have known it was a pretty easy thing in infancy to have it done, I would have had it done then.
Good Luck!