I'm not sure. My eldest had hers until she was 3. Her teeth were fine, only had it to go sleep as we took her dummy before she was 2 so to that was her comfort. But during the day, she had a bottle that resembled a fruit shoot bottle, so a sports bottle type if you will. Only one she would have. So you could try that or something with a straw. My youngest just has a water bottle with a straw, so when she wakes up, she can easily have a drink and I don't have to worry about it spilling
My baby girl drink her milk from a straw cup at night. Do you use cups during the day time?
Type in transition beaker / cup on Amazon. It’s like a sippy cup. X
We use a 360 cup
Can't they drink their milk from a cup?