Weaning off Bottle

So we have started to try and wean Jemma off the bottle and it isnt going well. She will drink a little formula but then stop and toss the sippy cup on the floor. I have tried a few different types. Erin said her daycare would give Ethan the sippy cup for 15 minutes then move it to the bottle if he didn't drink that. Maybe we will have to try that.