#1 do your blankets need another covering on them?
I just have the blanket and a light quilted bedspread. Most of the time I turn down the bedspread and am fine with just the blanket. It warms up fairly quickly and is very comfortable. Where we live temps at night get down into the teens and twenties, so very seldom do I need both the blanket and bedspread.
#2 Have you used an appliance/lamp timer to turn the blanket on automatically so it's toasty before you turn in?
No, I just turn the blanket on about twenty minutes before I go to bed. It heats up really quickly.