Baby is having issues taking bottle

Katie
So I breastfeed my baby girl and pump for her so she has milk when I'm not with her. She took the medela nipples just fine when we gave it to her at 2 weeks old up until 6 weeks old. Now all of a sudden she is refusing the bottle. She just moves it around in her mouth and sticks her tongue out. I also tried the tommy tipee bottles and the avent bottles,
But she does the same thing. Is anyone having the same issues, any advice?