Trochosa terricola (ground wolf spider) care

[JasperTheSpooder]

Yesterday, when I was in the basement of my home, I saw a ground wolf spider with only half it's legs struggling to get around and moving very slowly. I took him in and put him in a tall mealworm cup with dirt and moss and thinks to hide behind, including bark so he can climb a bit. I plan on feeding him small flies for now, but this weekend I will get some larger prey for him. I think he is a male, because he doesn't have that large, brown abdomen females have. I also think he is an adult because he is adult size. He was extremely skinny when I got him, and I can't seem to find a care guide online. Can anyone help?