i got mine from target and started with both hands and then one hand and then i let out both hands and he transitioned great!
We started by loosening the swaddle slowly at a time and then eventually took the arms out until he eventually just stopped noticing
My 2nd baby decided to roll at 10 weeks and caught me completely off guard as I assumed I’d have a lot longer like with my first so I was forced to go cold turkey. I’d say the first 3 nights were rough because of the startle reflex but then he just got used to it and is fine now
One arm out for a week then the other arm out so it’s just swaddled at baby’s bottom half. Gotta do it slowly
Could just be the 4 month sleep regression that’s affecting his wake-up’s rather than the lack of a swaddle!