Thanks for that. Like I said, we have bought every kind of sippy that we could find around town. It turns out that she likes the Take and Toss ones that are meant to be thrown a way! We have the soft ones like a bottle but she didn't like them. We bought the Playtex (?) ones with Mickey (her fave) and she wouldn't touch them. My plan right now is to give a bottle in the morning, nap time, and bed. She takes a bottle before going to sleep. She is just so tiny that I fear malnutrition. She had a virus last week so we were at the doctors the other day. She weighs a whole 17 pounds at a year old. She was over due and 7 pounds 13 ounces when she was born.
My daughter is almost 11 months and barely 16lbs. And she was born 16 days early at 8lbs 1.5oz, so basked on that she should be huge! But her dr isn't concerned about her weight at all, as she eats literally anything she has tried, except raspberries, and since we've given her nearly all foods, she has quite a varied diet. She does have milk and nut allergies (that seem to be fading in recent weeks!), so she hasn't had any dairy products or anything with nuts, but she eats all meats, veggies, fruits, starches, etc.
So anyway, my point there is don't fear malnutrition if she's eating a variety of foods, just cause she won't use a cup. The cup will come in time.
And as for ditching the bottle, my kids never had bottles, so I am not sure it's exactly the same process, but I just started them on straws at 6 months old and they were able to drink anything out of a cup that way. My 10 month old drinks water out of cups with straws without issue. I never did the sippy cups because my oldest never really caught onto the idea. She'd just hold them in front of her and suck, not tilting the cup back, so she wouldn't get any liquid out of the cup. After a couple of months, I quit and introduced the straw and life was easy.
It is so much easier to use straws cause you can get them a drink wherever you are, no worries about not having a sippy cup on you, or carrying around the cups in your car, when they get all sticky and stuff inside.
I also started teaching my older 2 how to drink out of a regular cup at 15 months and within 3 days, they pretty much have it down. My youngest has used a cup directly a few times and it hasn't been as messy as you'd think.
So my advice is just ditch the sippys and try straws or unlidded cups. Probably a much easier next step.