How can I be ready in the morning in your exercise clothes if I can’t sleep in them because I feel too warm?

You shouldn't wear your exercise clothes to bed. You will wrinkle your clothes and be hot in them. At night you should wear comfortable pajamas that will not make you hot or warm. You should have your exercise gear ready to put on after you shower in the morning and ready to go. I pack my exercise clothes and head out to the gym. Remember you can't wear your exercise clothes to bed.

Maybe sleep in some of the layers, with the rest by your bed ready to put on in the morning.
(eg sleep in underwear/ base layer and then wake up to put on top and bottoms)