K.L.
My daughter had a similar problem, she wouldnt drink from anything other than a bottle. What I did was went out and bought a bunch of the cups that you can put the straws in, instead and we ended up skipping the sippy cup routine all together. It actually ended up saving us money, and she still uses those cups today. I think that for her it was learning how to sip from the straw and blowing bubbles that made it fun and exciting. Plus she was still sucking on something. Now she drinks from anything. Good Luck!