cup feeding at 3mo -- sippy or something else?

have been trying to get my daughter to drink from a bottle since she was 3 weeks old. she is now 12 weeks and still won't or can't do it. we've literally tried everything and every bottle/nipple so no need to give me any suggestions. I'm making my peace with it. anyway, I'd like to try her on a cup of some sort so I'm looking for suggestions and experience from others. i know 3mo is probably too young but I'm desperate. anyone have any thoughts or experiences to share?