Soothie pacifier

So my daughter uses the soothie paci, I recently bought the bigger size since she was past the size she was using. Well she seems to have a lot of trouble with the bigger ones, they are thicker so they have to suck harder to keep them in and she is just having a really hard time with them. I have 2 of the ones with the animals attached so I have been giving her those because she doesn’t have trouble with those but the ones (3 months and older) that are by themselves she just can’t seem to keep it in. Does anyone know of any other paci that’s like the soothie but might be easier? I know I have seen similar ones at Wal mart I think they are called gumdrop or jolly something...just wondering if anyone has had any luck with those if their baby used the soothie, the nipples seem to be the same.