I just started to formula feed almost exclusively (still BF a little) about 3 weeks ago and I'm still using the same nipples I bought for when he was first born. I'm pretty new to formula feeding since both my girls were BF exclusively for a year so I'm not sure if this is ok. I think I saw different stages but can't remember when they need bigger ones. Is there a 3 month size I need to step up to or is that later? TIA!
Re: Nipples for bottles