Bottle nipple collapsing

J💜
I've been giving my daughter a bottle of breastmilk once every couple of days (after bath time). She sucks the milk so hard and fast we've been trying to slow her down with better positioning of her and bottle. But the bottle nipple is collapsing and I have to pull it out of her mouth to let the air back in. We use Tommy tippee anti colic bottles. Any advice?