My daughter was off the bottle at 6 months and on sippys

1y is a good age but the sooner the better! Try introducing a sippy before 1 and take away bottle unless necessary

Every kid is different. My son was 15 months when he stopped and my daughter never took one. She stopped nursing around 13 months then went straight to a sippy cup. So pretty much when you and baby are ready.

Around one year.