Arms out of Nanit swaddle making it loose

We put our 5 week old in the Nanit swaddles, and they are tight with arms down when he goes to bed. He wakes up with him arms up and hands coming out the top or touching his face. It is a problem because it gets the swaddle loose and I’m scared it’s going to cover his face. Anyone have this problem or suggestions? Is it time to get out of the swaddle?