I've read that weaning babies from the milk bottle to a sippy cup/straw cup/regular cup is necessary.

I'm referring solely to milk, not water or any other liquid. My baby takes forever to drink her milk in any cup, but takes only 10minutes with the milk bottle. She's never been a night feeder and do not cling to her bottle unnecessarily. But i'm seeing no light at the end of the tunnel when it comes to transition of milk feeds in a sippy/straw/cup.

How do i make her drink milk from any other cup except her bottle? She's currently 1-year old. Or is it too early to do so? How is it supposed to work? Have you successfully done so?

Please share. Thanks!