Agree with Claire, my son had a tongue tie and it affected so much. He lost weight because he wasn't latching on properly and he was awake all through the night. We had division done and he instantly put on weight, became a better sleeper and loved sticking his tongue out. It's one of the things I'm so so glad we had done x
Yes it can affect babies sleep. TT can cause babies to take more air in as well and cause more gas. My little girl had TT and had division done.