How can I train my dog to not sleep up against me in bed after I've fallen asleep?

I don’t mind that she sleeps in the bed, firstly. I do mind that she has taken to aggressively snuggling up against me. Every move I make leads to her following me, which has gotten to the point that it is disrupting my sleep.
She gets down when I tell her to, but lately it is so bad that I have to chase her out of bed several times a night because she keeps waking me up. Between her and my husband I am practically smothered, and I wake up often because I can’t move. As soon as I fall asleep again she is right back in my personal space. I have no idea how to change this behavior since it seems to only be a problem once I’m actually asleep. When I’m awake she will lay at the foot of the bed. I can watch TV for hours and she stays by my feet. She doesn’t get invasive until I nod off. It’s driving me bonkers, how do I stop it?