Hello, I've read your cot to bed information brochure but wanted to get some more advice around bedding in a toddler bed. Our son has just turned two and beginning to show interest in climbing up on the side of his cot but because he sleeps in a sleep sack I'm not sure what bedding to use once we take the side of the cot off to convert to toddler bed. The cot/bed will still have three sides so I would assume it's not safe for him to use a pillow, but also wondering what size bedding to buy - is a single doona and doona cover going to be too bulky to be safe? He moves around a fair bit while he's sleeping so I worry about him getting stuck under bedding/falling from a bigger bed. Thank you!