Hi, I feel your dilemma. My daughter had her tongue tie cut at Kings in November. I wasn't taken with the medic who carried out the procedure either or his recommendations for post operative care. Have a look on YouTube, there are some examples of how to massage the wound gently and playfully, not at all like the methods suggested at kings. Also look up the research yourself, just in google. The evidence is mixed I thought and depends on the type of tongue tie your child has. In the end we didn't massage the wound with our daughter and in didn't grown back. Good luck!