my LO is 3mths old using avent bottles. but still using 0+months teats. tried the level 2 but guess flow too fast. LO rejects and push away and didn't finish the milk. is it OK for LO to be still using newborn teats? worry might affect LO growth development in certain ways. pls advise. TIA.

Didnt know it was necessary to change teats accordingly. My girl is 12mo now and still using newborn teats !

it's perfectly fine! my girl is 10mths old and still using 1mth old teats from pigeon..

my baby use newborn treat till she 4 months old I just change to level 2 1 month ago

I personally feel it's ok. My 10MO is still using no.1 teats.

Its fine. Give the teat that they can manage.