Minor problem really but I have just bought 3 new bottles for my ds's night feed mainly cos then I have enough to pop in the dishwasher and don't need to wash every day.
They came with the slow flow teat. Does it matter if he has these or does he need no. 3 every time?
Also my friend warmed her babies bottle up in the microwave with the teat in, I always put it on after - does that matter?