Yeah I’ve had trouble with the milk not coming out and baby getting frustrated, having to suck extra hard for nothing.
So we’ve pierced the teats open abit more.
We started off by pinching the teats which released air bubbles then milk started flowing..
Hope that helps/ that’s the same trouble you experiencing
What size teats are you using? And how old I'd the baby I've had to buy all number 2 teats for my 3week old baby just after he was a week and abit as he was sucking to hard and then falling asleep I was struggling with wind.
Not had a problem as of yet
Thanks may get bigger teats xx