I am in the same boat as you are! My baby is almost 6 months, and I have had the hardest time getting her to eat from anything but my breast. I love breastfeeding, but I also feel very tied down sometimes! My Dr. told me to start interducing a sippy cup. I put some luke warm water in it and gave it to her in the highchair, she played with it for a while and eventualy started to suck on it. I know it is not her favorite thing, but I think she thinks of it as more of a toy than anything. She will not drink very much out of it- just a few sips here and there, but I think it will eventualy start being a normal thing for her. I think we just have to be patient and things will work out in the long run. Good luck to you!