He's still pretty young so it's pretty common for them to have frequent, sometimes almost constant, sheds. This will slow down as he ages. It's not something that should cause concern, he's just growing quickly which is good.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!