My baby is almost 4 months old. At night time i keep the room warm & put her sleepsuit so that she remains warm, her feets gets covered in that but palms will be open which gets cold at night. But she sleeps comfortably stretching her hands & does not show any signs that she is feeling cold. What should i do ko keep her hands warm at night ?? Note: she gets irritated if i put her mittens, so that i had stopped that from a very long time back