Difference between soother sizes?

My daughter uses the avent soothers and she has the 3-6 month ones I bought recently, but turned 6 months two weeks ago. Is it necessary to go buy the 6-18 month one? What’s the difference?

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors