It is true that turtles shed their scutes as do torts.
You should feed your Slider daily. Not every other day.
Most people feed thier Torts every other day because they wont eat every day mine do. But Tortoises (torts) arent the same as turtles.
The way i look at feeding turtles as my map turtle is ravenous every morning. I feed him a little in the Am, a little in the afternoon, and a little at night. He doesnt get more than he needs, but hes also not overly hungry during the day.
Turtles are very active swimming all day. They need more food more frequently.
Tortoises while active, slowly digest their food, and rest and sunbathe for a good porton of the day.
Depending on breed of tortoise some may hibernate some may not.
I was lucky when i recued my guys. They are african spurred Tortoises THEY NEVER HIBERATE. They start hissing every morning so they can eat breakfast. Then the dogs have to wait till the torts get their food before they are able to eat.
My torts are only 8 months. But they know their schedule like clockwork.
You have to love a turtle and a tort with a bubbly personality!