Struggling to transition my 7 month old baby from swaddle to sleep sack. My baby is used to being swaddled for his naps and can easily sleep with it in the afternoon. I bought a sleep sack to transition from swaddle and it worked out fine the first week (only worn at night) Then suddenly, he started being fussy at night so we thought it is already too small or snuggly for him. So we bought a new sleep sack one size up. The struggle now is when it's time for bed time (8:30pm) and I put him into his sleep sack, it suddenly takes up to 2 hours for him to sleep even though he is really sleepy (all cues and wake windows shown) but he was fine with it 2 weeks ago with no issues with the first sleep sack. Any tips or suggestions please. ... View more