@Melissa trying that out currently but not much luck, will try a few more days
How old is she ? Google says it disappears between 3-6 months of age , ive seen people on tiktok with babies who do it manage to get them to settle with their arms out of the sack by keeping your hand lightly on their chest / tummy when you first put baby down until they startle then you can slowly remove your hand or there are the swaddles where they can keep their arms up but still in the sack if you get what i mean
What about a transition swaddle?