Clicking while feeding

What has worked to stop baby from clicking during feedings? It’s not tongue tie. She did this a few weeks ago and then stopped. But now it’s back and worse than ever. It seems to be a combination of my fast flow and my baby’s sometimes aggressive suck. Her latch is good at first and then she starts clicking - which gives her gas Bc her suction goes and air gets in. I delatch her each time and give her my pinkie so she can practice proper sucking. Anyone else have ideas?