Sure! Your best bet doing it this way would be to put everything into the slow cooker right before bed, and let it cook on low through the night. As soon as you wake up (assuming it’s been at least 5 hours), toss the sesame oil, garlic, ginger, red pepper flakes, and bok choy into the slow cooker, let everything cook for 1 more hour, let everything cool to handling temperature, and then transfer to the refrigerator until ready to enjoy for dinner!