How long can a baby go between bottle feedings without forgetting how to drink from one?

[Snowflake777]

If you breastfeed and only give your baby the occasional bottle, how often do you need to do it so that they don't forget how to drink from one? Does it have to be pretty much every day? Twice a day? Twice a week?

I could never get my first child to drink from a bottle, so I'm completely clueless with this stuff!

[Marissamom]

I think most need at least twice a week