Hi, 1 year old ds currently sleeps in a grow bag on top of a fitted sheet with blanket on top tucked in securely as he has done since birth. I’ve noticed he is outgrowing his sleep bag despite it being sized 18-24 months (he’s very tall.) I’ve heard after 12 months it’s safe to introduce a thin quilt but not sure on the guidelines for an actual duvet that requires a duvet cover. When is it safe to introduce a pillow and duvet? When did you introduce the latter? Thanks everyone.