Like you, my first baby had a tongue tie that made it very difficult for him to feed until he had it cut. My second son also had a tongue tie, but fed much more effectively so we didn't get it cut initially, but it gradually got harder and harder for him (and more painful for me), so we had his cut too at about eight weeks. Both done by Mr Patel at Kings. So perhaps you could just wait and see how you get on... If it gets worse, you could get it cut at a later point.