Baby does NOT want to wean off the boob

So this is going on weekend #3 now where my little one is absolutely refusing to drink anything but water unless I give her a boob. She drinks whole milk just fine at the babysitter during the week, but when I have her during the day on the weekends she absolutely refuses. She'll push her bottle away and any type of sippy cup that I offer and then hit my chest to tell me what she wants. Idk what to do I didn't think this strike of hers would last almost a month but it has. Any advice 😩