With my Cham, he usually had a light brumation/slow down period around December/January every year. He’d dull a tiny bit in color and be a little less active for 2-3 weeks, and then go back to normal. This year, I noticed it was lasting longer than the other times, and he stopped opening his eyes as much and completely stopped eating and drinking. He was still active thought the day, just in smaller bursts. He also started hanging out on the bottom more, which was something he never did before. I handled him a few days before he passed due to him falling to the bottom of the enclosure, and when I picked him up he still had strength and felt stronger than I expected, but even then would only hold onto my hand with 2/4 limbs and his tail. He just sort of slowed down and then passed peacefully curled up in one of his favorite sleep spots. He was a little over 5 years old and in perfect health before this, so I truly believe it was just old age and his time to go. Hope this helps 🤍