My LO will be 13 months soon, still has 2-3 bottles in a day (6am/3.30/7pm) all in Dr Browns bottles. He is still having Neocate LCP formula for these too. He’s dairy free and i’m trying him with oat milk at 11am with his snack in a sippy cup but he’s not a fan of the milk. But do i still need to sterilise the bottles?? I obvs wash in hot soapy water prior so just wondered if this is now ok? Or i do have a diana washer too! I read you can stop after 1.