I was just wondering how often everyone changes the bottle teats over?
I know the recommendation on the packet is every three months, and with DD, we changed up a flow whenever she could suck the teat in on itself. DS is still on newborn teats, and they're all around 8 months old.
I don't really want to go and replace them with more newborns, only for him to grow out of them in a week, but on the other hand, I don't want to buy the next size up and drown him...
They all seem to be in good condition, I check them all out when I clean them, no deterioration that I can see.
What would / do you do?