Hi, I am new to the forum. I have a question about my American Land Tortoises. I have 2 the same age, 6 years. they have never hibernated. I always kept them inside during the winter. now I want to have them hibernate. they stay outside all the time, they have their own house on the concrete patio with a heating element in it. What would be the procedure to make sure they prepare for hibernation since they have never done so before? I have an elderly tortoise that goes down without any problem every year and wakes up just like clockwork. thanks in advance for any advice.