If you want to stretch your legs, you can lie down. If you have the habit of taking a nap, it is recommended to try it at noon (at least better than one night), lying cross-legged, and sticking your legs, including the roots of your legs, to the wall. If the degree is so good that 180 has no feeling at all, you can put something on the bed. If necessary, you can bear a little weight on your ankle, and generally you won't feel much. Try to relax, noon may pass quickly, because I will lie down at night.
I would like to remind you that it is not recommended to expect to fall asleep from the fork, especially during intensive exercise. The main muscle of the liver, even if it is worn for a long time (the leg consumption is no more than half an hour at a time, and I press it for 20 minutes at the most), is not good for flexibility, and it is even easy to cause potential sequelae such as strain, dislocation and nerve injury. This is the harmful part of your concern. That kind of exercise should only be available online, and ballet training should be avoided.