Same as Emma, the valve clicks when baby sucks but shows the air is getting through. Sorry if you already know, but they don’t have to be done individually for 3 mins. We do up to 7 at a time so we’re not constantly doing them!
Oh yes 😂 we sterilise in a Milton cold water container (unless baby has decided she's starving during the washing time and then we microwave sterlise) I don't get bothered by it mind you.
Yup! I just ignore it, as I'm guessing it's just a noise and, to be fair, it means there's air flowing through the valve, which is good I guess??