Now that it is getting colder I am worried about dressing DD at night. She has just slept in a footed sleeper since we stopped swaddling around 2 months. DD is a very mobile sleeper and I think a normal blanket would be pointless. I figured we would use a sleep sack but DD loves to roll around in the middle of the night and likes to sit up. If you use a sleep sack does it inhibit your baby from moving.