my 2 month old sulcata won't eat

by danny robertson
(ontario canada)

I brought him home from the pet store 4 days ago. The first day home he walked around his tank for a while then buried himself in the timothy hay. He stayed in that position until 4pm the next day, I took him out placed him under the light and he went for his food ( 1/4 cup lettuce). Went back to his hiding. For the past 2 days all he does is hide, when I take him out he won't eat, just goes back to the hay. I even tried soaking him for 10 minutes same thing. Is he getting sick??