I have a 4-5 inch long hermann tortoise, I feed him weeds from my yard along with orchard hay cucumber romaine lettuce and kale, he has UVB UVA and heating as well as a cold side, even a nice little pool that's shallow to prevent drowning, his substrate is 70% topsoil and 30 cypress mulch, what else can I do to make him happy? He seems somewhat mopey all the time. Any ideas welcome.