My 10 yo 85-100 lb sulcata lives outside. He grazes (bermuda and st augustine grass/weeds...) year round and this is the first winter that he has really started liking to eat hay. Occasionally he gets squash, zucchini, cucumber, spring mix, various greens, flowers, mazuri pellets and optunia cactus. My question is should I still give him calcium or any other supplements?