We said it once and we will say it again. Wear a loose pair of cotton socks to bed and you will sleep longer and better. Sleep near a radiator or add a space heater. Try a weighted blanket. What we do is use organic cotton sheets, organic cotton blankets, and all season comforters with duvets. Then when it gets really cold pile on the blankets. Sometimes I sleep with a hoodie on and i use the hood. It really helps.