Dd is just about 6 months old and has been sleeping in the Merlin sleepsuit since 3 months. Her sleep isn't amazing, but it's not terrible. She's been rolling all over the place and trying to crawl (not in the sleepsuit yet), so I know it's time to transition her out of it before it's dangerous. Last night we tried a sleep sack and it was awful, she was rolling and claiming all over the place and wouldn't calm down even in my arms. After about 3 hours I finally put her back in her suit and she slept fine. Any tips?? I'm not even sure cry it out will work, she was not letting up!