Every baby will have their own set of rules about it. Just wait until you're comfortable before trying, because not every baby even likes pacis. Mine is almost 7 months and he generally only uses it in the car or when he's fussy due to teething.
@tayek @beautifuldiva27 ... I have nuk and jollypop I'm just so afraid that she won't be able to latch on anymore so I haven't tried anything
It can also depend on the baby. My daughter would only take mam and Phillips Avent that had the same kind of nipple as mam (Phillips Avent has 2 different ones). But my son will only use the tommee tippee.