Hawksbill Turtle will go into hibernation in winter time and wake up when the weather warms up, to give it hibernation you can prepare moist sand, coconut soil, or shallow water to help it hibernate.
When the Hawksbill turtle hibernates, it lowers its body metabolism to reduce heat consumption, and during this period, it will hide in the sand, coconut soil to keep warm, you can give it a spray of water regularly to keep it moist.
Hawksbill turtle in winter, you can also give it the environment to warm up, so that it does not enter the hibernation state, usually young turtles and the body state is not very good hawksbill turtle, hibernation is likely to lead to death, so you need to give it to warm up through the winter.