I ve got a 4 week old baby and was originally using closer to nature bottles.
However my baby has real trouble with trapped wind so i swapped her bottles for the tommee tippee anti colic ones.
However the teats kept collapsing on them (my baby does suck quite hard) so i changed them to the medium flow.
Also the milk keeps getting bubbles in it when my baby is feeding. I ve checked the valve ring at the bottom of the tube inside the bottles and the valve slit is open, so it should be working.
The teats are still collapsing on the medium flow. When assembling the bottles, am i suppose to pinch the end of the valve and put it on the tube whilst still pinching the end?
Any advice on these bottles would be very much appreciated.