I had my daughter's tongue tie cut yesterday at 5 and 1/2 weeks old. I have been using nipple shields from 2 days old and supplementing with formula from 3 weeks old. Directly after the appointment she latched quite well but since then she has struggled to latch on, getting quite upset when trying. It feels really hard to get her to open her mouth wide enough and she ends up moving her head from side to side in distress. Any tips? I really would like to wean off the shields