My three young Desert Tortoises have been out of hibernation for 3 weeks now and they are still very sluggish. This is my second year with them and last year they were very active when they came out of hibernation. This year they are not the same. They will only eat small amounts of Romaine lettuce (not the best, I know, but they need some source of fluids, right?) and have drank small amounts of water. They did eat some watermelon but not very much. I tried their usual grass pellets and they were not interested. My real concern is that they have not pooped at all. We did have an unusually cold winter here in Southern CA. Could this be the issue? I'm very concerned as we have had some really warm days and they still aren't eating/drinking/pooping properly. Any input would be greatly appreciated. They are 5 years old and I hibernated them inside boxes in a sheltered corner of my patio. This is how I did it the previous year and they did great. Thank you for your help!