Avent Naturals Nipple sizes

M

Hi Mamas!

So my little one is 10 weeks today. My how time flies!!

Doc said to start using the size 2 nipples now. As our babies age, do they need sizes 3 & 4? Or is that more of a marketing thing? Or could a baby just stop at size 3? Those nipples sure do add up when you’ve got 9+ bottles and baby is in daycare. You have to give them 3 bottles then be prepared for at home.

Thanks! Newbie to formula and babies over here.