Feed whenever suits you. Every animal is different. you will soon learn what YOUR gecko likes. Reptile keeping isnt black and white there isn't just one right way of doing things. My thicktails won't even eat if you are present so I just leave a couple of woodies in there at a time and when they are gone i put more in. They live on sand with two hides no heat except from the above shelf. They dont really burrow so the sand isnt too deep. They are super simple and seems impossible to go wrong. As long as you dont try n hold them unless its absolutely necessary.