What age did everyone stop sterilizing?

11 months when he was drinking from his sippy cup all day and had one bottle at night xx

1, when she stopped drinking formula as it’s something to do with something in the formula of why u need to sterilise x

Still do now just makes me feel better xx

I still do. Will stop by 11 months

Think I stopped when he turned 1 xx

Iv stopped now he's one on Sunday x