Mam active bottle collapsing

As said in the title, we have moved our 6 month old onto active mam bottles with size 3 teats. She is collapsing the teats as soon as she starts drinking. Is it normal for the teats to collapse because it doesn't have the anti-colic valve or is the teat too slow for her. Should I just use size 3 teats in the anti-colic bottles as she doesn't collapse the teats with those, I don't know whether the teats are interchangable between bottle types because I know some bottles like tommee tippee have different teats for anti colic.