Snoo Swaddle weaning

Hi Snoo mamas! So my LG is 5 months and now we are on the last month of using the snoo bed. We hardly use the motion or noise now as she sleeps well without being rocked (only the odd time) but I've been swaddling her arms in by her body since 2 weeks old and now I'm not sure how to stop🙈 We tried last night to have 1 arm out but she didn't sleep as well and was moving alit and woke up at 4 am instead of sleeping through till 6am 😪 and that's the only thing that was different last night so I'm reluctant to unswaddle but u know once she's able to roll ( and she's showing signs that it's nit far) she should not be swaddled any more 😞 So any tips in how to get baby to sleep well unswaddled would be great 🥰